[CI] Use uv in examples workflow

.github/workflows/examples.yml

@@ -27,17 +27,16 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+        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
+          uv pip install .
+          uv pip install pytest nbmake
+          uv pip install -U matplotlib!=3.7.0 # Exclude version 3.7.0 of matplotlib as this breaks local imports of style files.
 
       - name: Run tests
         run: pytest -vv --nbmake examples/*.ipynb