Update ci.yml with uv (#41)

Signed-off-by: Glenn Jocher <[email protected]>

.github/workflows/ci.yml

@@ -22,16 +22,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+      - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
-          cache: "pip"
+
+      - uses: astral-sh/setup-uv@v4
 
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install -e ".[dev]"
+          uv pip install --system -e ".[dev]"
 
       - name: Run Python tests
         run: |