build(deps): update django-taggit requirement

Updates the requirements on [django-taggit](https://github.com/jazzband/django-taggit) to permit the latest version.
- [Changelog](https://github.com/jazzband/django-taggit/blob/master/CHANGELOG.rst)
- [Commits](jazzband/django-taggit@2.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: django-taggit
  dependency-type: direct:production
...

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

requirements.txt

@@ -119,7 +119,7 @@ entrypoints==0.4
 wagtail==4.0.4
 django-modelcluster>=6.0,<7.0
 django-permissionedforms>=0.1,<1.0
-django-taggit>=2.0,<5.0
+django-taggit>=2.0,<6.0
 django-treebeard>=4.5.1,<5.0
 djangorestframework>=3.11.1,<4.0
 django-filter>=2.2,<24