fix: run alembic migrations before E2E tests in CI

The unit tests drop all tables on teardown, so the E2E step
needs to recreate the schema via alembic before running.

.forgejo/workflows/release.yml

@@ -44,7 +44,9 @@ jobs:
         run: uv run pytest tests/ --ignore=tests/e2e -v --tb=short
 
       - name: Run E2E tests
-        run: uv run pytest tests/e2e/ -v --tb=short
+        run: |
+          uv run alembic upgrade head
+          uv run pytest tests/e2e/ -v --tb=short
 
   release:
     needs: test