[CI] Speed up test workflow install phase by using uv

.github/workflows/examples.yml

@@ -27,17 +27,17 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: uv
+        uses: astral-sh/setup-uv@v5
 
       - name: Install
         run: |
           sudo apt-get update
           sudo apt-get install dvipng texlive-latex-extra texlive-fonts-recommended cm-super
-          python -m pip install --upgrade pip
-          pip install wheel
-          pip install .
-          pip install pytest
-          pip install nbmake
-          pip install -U matplotlib!=3.7.0 # Exclude version 3.7.0 of matplotlib as this breaks local imports of style files.
+          uv pip install wheel --system
+          uv pip install . --system
+          uv pip install pytest nbmake --system
+          uv pip install -U matplotlib!=3.7.0 --system # Exclude version 3.7.0 of matplotlib as this breaks local imports of style files.
 
       - name: Run tests
         run: pytest -vv --nbmake examples/*.ipynb

.github/workflows/pytest.yml

@@ -30,17 +30,15 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: uv
+        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 --system
+          uv pip install . --system
+          uv pip install pytest pytest-cov pytest-benchmark hypothesis --system
+          uv pip freeze --system
 
       - name: Run tests
         run: pytest --cov=pyerrors -vv