Bump drf-spectacular from 0.27.2 to 0.28.0 in /api_server

Bumps [drf-spectacular](https://github.com/tfranzel/drf-spectacular) from 0.27.2 to 0.28.0.
- [Release notes](https://github.com/tfranzel/drf-spectacular/releases)
- [Changelog](https://github.com/tfranzel/drf-spectacular/blob/master/CHANGELOG.rst)
- [Commits](tfranzel/drf-spectacular@0.27.2...0.28.0)

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

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

api_server/requirements.txt

@@ -6,6 +6,6 @@ djangorestframework-simplejwt==5.3.1
 gunicorn==22.0.0
 django-health-check==3.18.3
 whitenoise==6.7.0
-drf-spectacular==0.27.2
+drf-spectacular==0.28.0
 django-nose==1.4.7
 pynose==1.5.3