Bump pypa/cibuildwheel from 2.16.5 to 2.21.1

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.16.5 to 2.21.1.
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v2.16.5...v2.21.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/wheels.yml

@@ -43,7 +43,7 @@ jobs:
       with:
         submodules: true
 
-    - uses: pypa/cibuildwheel@v2.16.5
+    - uses: pypa/cibuildwheel@v2.21.1
       env:
         CIBW_ARCHS_MACOS: auto universal2
         CIBW_REPAIR_WHEEL_COMMAND_MACOS: ""