fix: Use uv run to execute tests in CI/CD workflow

The tests were failing because uv sync creates a virtual environment
but the test command was using the system Python. Using 'uv run'
ensures the tests run in the correct virtual environment with all
dependencies installed.

Author: matrixise

.github/workflows/test.yml

@@ -19,4 +19,4 @@ jobs:
           uv sync
       - name: Run the tests
         run: |
-          python pythonie/manage.py test pythonie --verbosity=2
+          uv run python pythonie/manage.py test pythonie --verbosity=2