INstall uv for tests

Author: nekeal

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
-      - run: python -m pip install cookiecutter pytest pyyaml toml
+      - run: python -m pip install cookiecutter pytest pyyaml toml uv
       - run: pytest
 
   lint-generated-project: