Bump pypa/cibuildwheel from 2.20 to 2.21 (#1437)

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.20 to 2.21.
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v2.20...v2.21)

---
updated-dependencies:
- dependency-name: pypa/cibuildwheel
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/release.yaml

@@ -120,7 +120,7 @@ jobs:
           cp "$VCPKG_INSTALLATION_ROOT/installed/${{ matrix.triplet }}/share/proj/"* ${GITHUB_WORKSPACE}/pyproj/proj_dir/share/proj/
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.20
+        uses: pypa/cibuildwheel@v2.21
         env:
           CIBW_SKIP: "*musllinux* pp*-win* pp31*"
           CIBW_ARCHS: ${{ matrix.arch }}