Update django-crispy-forms requirement from ~=1.14.0 to ~=2.1

Updates the requirements on [django-crispy-forms](https://github.com/django-crispy-forms/django-crispy-forms) to permit the latest version.
- [Release notes](https://github.com/django-crispy-forms/django-crispy-forms/releases)
- [Changelog](https://github.com/django-crispy-forms/django-crispy-forms/blob/main/CHANGELOG.md)
- [Commits](django-crispy-forms/django-crispy-forms@1.14.0...2.1)

---
updated-dependencies:
- dependency-name: django-crispy-forms
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,6 +1,6 @@
 Django~=4.2.7
 pillow~=10.0.1
-django-crispy-forms~=1.14.0
+django-crispy-forms~=2.1
 Markdown~=3.4.3
 Unidecode~=1.3.6
 Pygments~=2.14.0