chore(deps): bump django from 4.2.18 to 4.2.20 (#2699)

Bumps [django](https://github.com/django/django) from 4.2.18 to 4.2.20.
- [Commits](django/django@4.2.18...4.2.20)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

base-requirements.txt

@@ -4,7 +4,7 @@ django-sitetree==1.18.0  # >=1.17.1 is (?) first version that supports Django 4.
 django-apptemplates==1.5
 django-admin-interface==0.28.9
 django-translation-aliases==0.1.0
-Django==4.2.18
+Django==4.2.20
 docutils==0.21.2
 Markdown==3.7
 cmarkgfm==0.6.0