Bump pypa/cibuildwheel from 2.19.2 to 2.21.1

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.19.2 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@v2.19.2...v2.21.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/wheels.yml

@@ -43,7 +43,7 @@ jobs:
         fetch-tags: true
         fetch-depth: 0
 
-    - uses: pypa/cibuildwheel@v2.19.2
+    - uses: pypa/cibuildwheel@v2.21.1
       env:
         MACOSX_DEPLOYMENT_TARGET: 10.14