Update dependency drf-spectacular to ^0.28.0 (#8)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

poetry.lock

@@ -28,7 +28,7 @@ django-server-status = "^0.7.0"
 django-storages = "^1.13.2"
 djangorestframework = "^3.14.0"
 drf-jwt = "^1.19.2"
-drf-spectacular = "^0.27.0"
+drf-spectacular = "^0.28.0"
 gunicorn = "^23.0.0"
 ipython = "^8.14.0"
 litellm = "^1.53.5"