Update django-crispy-forms to 2.1

[pyup-bot]

This PR updates django-crispy-forms from 1.7.2 to 2.1.

Changelog

2.1

* Added support for Django 5.0.
* Dropped support for Django 3.2, 4.0 and 4.1.
* Added support for Python 3.12.
* Dropped support for Python 3.7.

See the [2.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/20?closed=1) for the full change
list.

2.0

Release of django-crispy-forms 2.0. No changes introduced since 2.0a1.

2.0a1

Major Changes and Migration Guide
* Removed all Bootstrap template packs. These template packs are now available as standalone packages.
To upgrade, install the required template pack and add it to your
[`INSTALLED_APPS`](https://docs.djangoproject.com/en/stable/ref/settings/#std-setting-INSTALLED_APPS) setting.

 * Boostrap 2: [PyPI](https://pypi.org/project/crispy-forms-bootstrap2/) -- [GitHub](https://github.com/django-crispy-forms/crispy-forms-bootstrap2)
 * Boostrap 3: [PyPI](https://pypi.org/project/crispy-bootstrap3/) -- [GitHub](https://github.com/django-crispy-forms/crispy-bootstrap3)
 * Boostrap 4: [PyPI](https://pypi.org/project/crispy-bootstrap4/) -- [GitHub](https://github.com/django-crispy-forms/crispy-bootstrap4)

Also, support for Bootstrap 5 is provided by a 3rd party package under the `django-crispy-forms` organisation at
[crispy-bootstrap5](https://github.com/django-crispy-forms/crispy-bootstrap5).

* Removed uni-form template pack. Uni-Form specific classes previously added to every template pack e.g. `textInput` are now removed.
If you require these classes, the previous behaviour can be restored by adding the following to [CRISPY_CLASS_CONVERTERS](https://django-crispy-forms.readthedocs.io/en/latest/crispy_tag_forms.html#change-crispy-forms-input-default-classes) in your settings file.


 converters = {
   "textinput": "textinput textInput",
   "fileinput": "fileinput fileUpload",
   "passwordinput": "textinput textInput",
}


* The `uni-form` template pack allowed for rendering of templates using a `default` or `inline` layout. As the `uni-form` template
pack has been removed support for this has also been removed. This has resulted in the following **BREAKING** changes.

 * The `form_style` attribute of `FormHelper` is removed.
 * The `form_style` positional argument to `render_field()` is removed.
 * The `form_style` positional argument to the `render()` method of all `LayoutObjects` is removed.

Audit for use of `render()` and `render_field()` due to the removal of the `form_style` positional argument is therefore
required. For example:


django-crispy-forms 1.x
html = my_layout_object.render(form, form_style, context)
django-crispy-forms 2.x
html = my_layout_object.render(form, context)


* Widespread use of the `|safe` in crispy-form templates is removed. Audit for html input in your forms
especially for Field and Prepended/Appended text. To retain the previous behaviour mark text as safe
in your project code using
[`mark_safe()`](https://docs.djangoproject.com/en/4.0/ref/utils/#django.utils.safestring.mark_safe). Refs 296.

Other Changes
* Dropped support for Django 2.2.
* Added support for Django 4.1 and 4.2.
* Added support for Python 3.11.
* The `flat_attrs()` method of `FormActions` is removed. Attributes provided by `**kwargs` are now passed via the `flat_attrs` function during `__init__()` instead of with each call of `render()`
* The `html5_required` attribute of `FormHelper` is removed. In all supported versions of Django the `required` attribute is provided by the core `forms` module.
* The `FormActions` layout object learnt a `css_id` kwarg to add an `id` to the rendered `<div>`
* The default values of "form_error_title" and "formset_error_title" of FormHelper changed from `None` to `""`.
* An attribute error is now raised if the `CRISPY_TEMPLATE_PACK` setting is not provided.
* The `get_layout_objects()` and `get_field_names()` functions of `LayoutObject` now return a list of `Pointers` rather than a list
of lists. Pointers are a `dataclass` containing a list of `posistions` and the `name` of object/field.

1.14.0

* Added support for Python 3.10
* Dropped support for Django 3.1
* Dropped support for Python 3.6
* Added bootstrap modal layout object (1204)
* Added `input_size` argument to `FieldWithButtons` to allow customisation of the size of the input in the Bootstrap 4
template pack. (1159)

See the [1.14.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/18?closed=1) for the full change list.

1.13.0

* Added support for Django 4.0

1.12.0

* Fixed rendering of grouped checkboxes and radio inputs in the Bootstrap 4 template pack. (1155)
* Introduced new `input_size` argument to `AppendedText`, `PrependedText` and `PrependedAppendedText`. This allows
the size of these grouped inputs to be changed in the Bootstrap 4 template pack. (1114)
* Confirmed support for Django 3.2
* Dropped support for Python 3.5
* Dropped support for Django 3.0

See the [1.12.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/16?closed=1) for the full change list.

1.11.2

* Added HTML parsing tools to help testing of template packs (1128)
* Fixed rendering of all widget attributes for file fields (1130)

See the [1.11.2 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/15?closed=1) for the full change list.

1.11.1

* Added `custom-select` for select widgets within prepended and appended fields (1116)

See the [1.11.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/14?closed=1) for the full change list.

1.11.0

* Implemeneted `custom-select` for Select widgets in the Bootstrap4 Template Pack (1091)
* Fixed `data-parent` in AccodrianGroup (1091)
* Documentation improvements

See the [1.11.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/13?closed=1) for the full change list

1.10.0

* Fixed test causing `SystemCheckError` in some cases. (1075)
* Radio and Checkbox now respect the field's `disabled` attribute when using the Bootstrap4 template pack. (1057)
* A number of documentation improvements.

See the [1.10.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/12?closed=1) for the full change list

1.9.2

* Fixed FileField UI bug

See the [1.9.2 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/11?closed=1) for the full change list.

1.9.1

* Added Bootstrap 4 styling for clearable file widget.
* Fixed FileField UI bug.
* Project now uses GitHub actions for testing.

See the [1.9.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/10) for the full change list.

1.9.0

* Removed support for Python 2.
* Removed support for Django versions prior to 2.2.
* CSS for Column layout object in Bootstrap 4 template pack changed to 'col-md'. Default is now over ridden when another 'col' class is added to css_class.

See the [1.9.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/9) for the full change list.

1.8.1

* Fixing FileField UI bug introduced with 1.8.0
* Remove is-valid css class for radio (bug introduced with 1.8.0)
* Various alignment and margin fixes for Bootstrap 4 template pack
* Documentation : using read-the-docs template, documenting how to run test suite, documenting use_custom_control help attributes

See the [1.8.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/8?closed=1) for the full change list.

1.8.0

* Updated compatibility for Django 1.11, 2.1, 2.2 and 3.0 in line with Django's
supported versions policy.
* Numerous improvements to the Bootstrap 4 template pack, which may now be
considered mature.

Here are some changes that might affect custom templating you already have in
place when using Bootstrap 4 :

 * Using [Custom Forms for radio and checkbox](https://www.w3schools.com/bootstrap4/bootstrap_forms_custom.asp).
   You may disable this by setting  `FormHelper.use_custom_control = False`.
 * Using [Bootstrap 4 `"form-row"` class in place of `"row"`](https://getbootstrap.com/docs/4.3/components/forms/#form-row).
 * Fixing [layout hierarchy between input and its label for checkbox and radio](https://getbootstrap.com/docs/4.0/components/forms/#checkboxes-and-radios).

<small>Links are to the relevant Bootstap 4 docs.</small>

See the [1.8.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/7?closed=1) for the full change list.

Many thanks to all involved in bringing together a great release!

Links

• PyPI: https://pypi.org/project/django-crispy-forms
• Changelog: https://data.safetycli.com/changelogs/django-crispy-forms/