[CI] Speed up install phase by using uv

.github/workflows/pytest.yml

@@ -30,17 +30,14 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+        uses: astral-sh/setup-uv@v5
 
       - name: Install
         run: |
-          python -m pip install --upgrade pip
-          pip install wheel
-          pip install .
-          pip install pytest
-          pip install pytest-cov
-          pip install pytest-benchmark
-          pip install hypothesis
-          pip freeze
+          uv pip install wheel
+          uv pip install .
+          uv pip install pytest pytest-cov pytest-benchmark hypothesis
+          uv pip freeze
 
       - name: Run tests
         run: pytest --cov=pyerrors -vv