chore(ci): Use uv instead of pipx for speed

Author: effigies

.github/workflows/wheels.yml

@@ -73,10 +73,8 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-python@v6
-
-      - name: Update pip/pipx
-        run: python -m pip install --upgrade pip pipx
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v6
 
       # For aarch64 support
       # https://cibuildwheel.pypa.io/en/stable/faq/#emulation
@@ -86,7 +84,7 @@ jobs:
         if: runner.os == 'Linux' && endsWith(matrix.buildplat[1], 'aarch64')
 
       - name: Build wheel(s)
-        run: pipx run --spec "cibuildwheel>=2.15" cibuildwheel
+        run: uvx cibuildwheel
         env:
           CIBW_BUILD: ${{ matrix.python }}-${{ matrix.buildplat[1] }}