Bump django from 3.0.4 to 3.0.7

Bumps [django](https://github.com/django/django) from 3.0.4 to 3.0.7.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.0.4...3.0.7)

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -5,7 +5,7 @@ botocore==1.15.33
 certifi==2019.11.28
 colorama==0.3.9
 dj-database-url==0.5.0
-Django==3.0.4
+Django==3.0.7
 django-hosts==4.0
 django-storages==1.9.1
 docutils==0.15.2