Bump django-extensions from 2.2.5 to 2.2.8 in /requirements (#5980)

Bumps [django-extensions](https://github.com/django-extensions/django-extensions) from 2.2.5 to 2.2.8.
- [Release notes](https://github.com/django-extensions/django-extensions/releases)
- [Changelog](https://github.com/django-extensions/django-extensions/blob/master/CHANGELOG.md)
- [Commits](https://github.com/django-extensions/django-extensions/compare/2.2.5...2.2.8)

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

requirements/dev.txt

@@ -24,9 +24,9 @@ responses==0.10.9 \
     --hash=sha256:515fd7c024097e5da76e9c4cf719083d181f1c3ddc09c2e0e49284ce863dd263 \
     --hash=sha256:8ce8cb4e7e1ad89336f8865af152e0563d2e7f0e0b86d2cf75f015f819409243
 
-django-extensions==2.2.5 \
-    --hash=sha256:a9db7c56a556d244184f589f2437b4228de86ee45e5ebb837fb20c6d54e95ea5 \
-    --hash=sha256:b58320d3fe3d6ae7d1d8e38959713fa92272f4921e662d689058d942a5b444f7
+django-extensions==2.2.8 \
+    --hash=sha256:1a03c4e8bade575f8c2be6c76456f8a2be3f9b02ab9f47d3535afa9562dc0493 \
+    --hash=sha256:2699cc1d6fb4bd393c0b5832fea4bc685f2ace5800b3c9ff222b2080f161ac04
 
 pytest-selenium==1.17.0 \
     --hash=sha256:caf049839d12297e01f0521a968e44ae854f4eca1afd80b28f6a2510df02c883 \