Bump django from 5.0.6 to 5.1.4 in /api_server

Bumps [django](https://github.com/django/django) from 5.0.6 to 5.1.4.
- [Commits](django/django@5.0.6...5.1.4)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

api_server/requirements.txt

@@ -1,4 +1,4 @@
-Django==5.0.6
+Django==5.1.4
 djangorestframework==3.14.0
 psycopg2-binary==2.9.9
 tzdata==2024.1