Bump django-environ from 0.8.1 to 0.10.0

Bumps [django-environ](https://github.com/joke2k/django-environ) from 0.8.1 to 0.10.0.
- [Release notes](https://github.com/joke2k/django-environ/releases)
- [Changelog](https://github.com/joke2k/django-environ/blob/main/CHANGELOG.rst)
- [Commits](joke2k/django-environ@v0.8.1...v0.10.0)

---
updated-dependencies:
- dependency-name: django-environ
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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