chore(deps): bump pypa/cibuildwheel in the actions group

Bumps the actions group with 1 update: [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel).


Updates `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
  dependency-group: actions
...

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

.github/workflows/build-wheels.yml

@@ -105,7 +105,7 @@ jobs:
     - name: Prepare build files
       run: pipx run nox -s prepare
 
-    - uses: pypa/cibuildwheel@v2.20
+    - uses: pypa/cibuildwheel@v2.21
       env:
         CIBW_BUILD: "${{ matrix.build }}*"
         CIBW_ARCHS: ${{ matrix.arch }}
@@ -157,7 +157,7 @@ jobs:
 
     - uses: docker/[email protected]
 
-    - uses: pypa/cibuildwheel@v2.20
+    - uses: pypa/cibuildwheel@v2.21
       env:
         CIBW_BUILD: cp${{ matrix.python }}-*
         CIBW_ARCHS: ${{ matrix.arch }}

.github/workflows/packaging-test.yml

@@ -68,15 +68,15 @@ jobs:
     - name: Prepare build files
       run: pipx run nox -s prepare
 
-    - uses: pypa/cibuildwheel@v2.20
+    - uses: pypa/cibuildwheel@v2.21
       env:
         CIBW_ARCHS_MACOS: universal2
         CIBW_BUILD: cp39-win_amd64 cp310-manylinux_x86_64 cp38-macosx_universal2
       with:
         config-file: cibuildwheel.toml
         package-dir: awkward-cpp
 
-    - uses: pypa/cibuildwheel@v2.20
+    - uses: pypa/cibuildwheel@v2.21
       if: matrix.os == 'ubuntu-latest'
       env:
         CIBW_BUILD: cp312-manylinux_x86_64