uvに対応したgithub action

.github/workflows/python-app.yml

@@ -37,9 +37,11 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install flake8
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install uv
+        uv sync
     - name: Lint with flake8
       run: |
+        source .venv/bin/activate
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
@@ -47,4 +49,6 @@ jobs:
     - name: Run tests
       env:
         PYTHONPATH: .
-      run:  python -m unittest discover -s test -p '*.py'
+      run: |
+        source .venv/bin/activate
+        uv run python -m unittest discover -s test -p '*.py'