Update GitHub Actions workflow to support Python 3.12 and improve set…

…up steps

.github/workflows/tests.yml

@@ -11,30 +11,29 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version:
+          - "3.9"
+          - "3.10"
+          - "3.11"
+          - "3.12"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+      - name: Install uv and set the python version
+        uses: astral-sh/setup-uv@v4
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install UV
-        run: |
-          python -m pip install --upgrade pip
-          pip install uv
-
       - name: Install dependencies
         run: |
           uv venv
-          uv pip install ".[dev]"
-          uv pip install pytest pytest-cov
+          uv pip install -e ".[dev]"
+          uv tool install pytest pytest-cov
 
       - name: Run tests with pytest and coverage
         run: |
-          pytest tests/ --cov=lr_autotag --cov-report=xml
+          uv tool run pytest tests/ --cov=lr_autotag --cov-report=xml
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3