ci: use uv in github actions

Author: Otto-AA

.github/workflows/tests.yml

@@ -14,17 +14,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+      - name: Install uv and set the Python version
+        uses: astral-sh/setup-uv@v6
         with:
           python-version: ${{ matrix.python-version }}
+          enable-cache: true
 
       - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install -r test_requirements.txt
+        run: uv sync --locked --dev
 
       - name: Run tests
-        run: python -m pytest
-        continue-on-error: false
+        run: uv run pytest