use uv to run manage.py

Author: snopoke

.github/workflows/tests.yml

@@ -61,7 +61,7 @@ jobs:
       continue-on-error: ${{ matrix.experimental }}
     - name: Check migrations
       run: |
-        ./example/manage.py makemigrations field_audit
+        uv run ./example/manage.py makemigrations field_audit
         git add ./field_audit/migrations
         trap 'git reset --hard HEAD' EXIT  # discard changes on exit (needed for continue-on-error)
         git diff --cached --exit-code