Bump django in /build/automation/lib/docker/image/python-app/example

Bumps [django](https://github.com/django/django) from 3.2.25 to 4.2.26.
- [Commits](django/django@3.2.25...4.2.26)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 4.2.26
  dependency-type: direct:production
...

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

Author: dependabot[bot]

build/automation/lib/docker/image/python-app/example/requirements.txt

@@ -1 +1 @@
-Django==3.2.25
+Django==4.2.26