build(deps): bump django from 4.2.6 to 4.2.7 in /backend (#1955)

Bumps [django](https://github.com/django/django) from 4.2.6 to 4.2.7.
- [Commits](https://github.com/django/django/compare/4.2.6...4.2.7)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: ANdi <abpostelnicu@me.com>

backend/requirements.txt

@@ -1,6 +1,6 @@
 -e ../tools #egg=code-review-tools
 dj-database-url==2.1.0
-Django==4.2.6
+Django==4.2.7
 django-cors-headers==4.3.1
 djangorestframework==3.14.0
 dockerflow==2022.8.0