build(deps): bump pypa/cibuildwheel from 2.20.0 to 2.21.1

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.20.0 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@v2.20.0...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]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -311,7 +311,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: aarch64-apple-darwin,x86_64-apple-darwin
-      - uses: pypa/cibuildwheel@v2.20.0
+      - uses: pypa/cibuildwheel@v2.21.1
         env:
           CIBW_BUILD: cp39-*
           CIBW_BEFORE_BUILD: >