Bump django from 4.2.17 to 4.2.20 in /support/test/python/django

Bumps [django](https://github.com/django/django) from 4.2.17 to 4.2.20.
- [Commits](django/django@4.2.17...4.2.20)

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

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

Author: dependabot[bot]

support/test/python/django/requirements.txt

@@ -1 +1 @@
-Django==4.2.17
+Django==4.2.20