Bump the actions group across 1 directory with 2 updates

Bumps the actions group with 2 updates in the / directory: [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) and [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish).


Updates `actions/attest-build-provenance` from 1.4.4 to 2.1.0
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](actions/attest-build-provenance@ef24412...7668571)

Updates `pypa/gh-action-pypi-publish` from 1.12.2 to 1.12.3
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](pypa/gh-action-pypi-publish@15c56db...67339c7)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: pypa/gh-action-pypi-publish
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/cibuildwheel.yml

@@ -230,9 +230,9 @@ jobs:
         run: ls dist
 
       - name: Generate artifact attestation for sdist and wheel
-        uses: actions/attest-build-provenance@ef244123eb79f2f7a7e75d99086184180e6d0018  # v1.4.4
+        uses: actions/attest-build-provenance@7668571508540a607bdfd90a87a560489fe372eb  # v2.1.0
         with:
           subject-path: dist/matplotlib-*
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@15c56dba361d8335944d31a2ecd17d700fc7bcbc  # v1.12.2
+        uses: pypa/gh-action-pypi-publish@67339c736fd9354cd4f8cb0b744f2b82a74b5c70  # v1.12.3