MAINT: Bump pypa/cibuildwheel from 2.20.0 to 2.21.0

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.20.0 to 2.21.0.
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@bd033a4...79b0dd3)

---
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/emscripten.yml

@@ -48,7 +48,7 @@ jobs:
           submodules: recursive
           fetch-tags: true
 
-      - uses: pypa/cibuildwheel@bd033a44476646b606efccdd5eed92d5ea1d77ad  # v2.20.0
+      - uses: pypa/cibuildwheel@79b0dd328794e1180a7268444d46cdf12e1abd01  # v2.21.0
         env:
           CIBW_PLATFORM: pyodide
 

.github/workflows/wheels.yml

@@ -166,7 +166,7 @@ jobs:
           echo "CIBW_BUILD_FRONTEND=pip; args: --no-build-isolation" >> "$GITHUB_ENV"
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@bd033a44476646b606efccdd5eed92d5ea1d77ad  # v2.20.0
+        uses: pypa/cibuildwheel@79b0dd328794e1180a7268444d46cdf12e1abd01  # v2.21.0
         env:
           CIBW_PRERELEASE_PYTHONS: True
           CIBW_FREE_THREADED_SUPPORT: True