Bump actions/cache from 4.2.3 to 4.2.4 (#81)

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.3 to 4.2.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@5a3ec84...0400d5f)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 4.2.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/publish-docs.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Install Python dependencies
         run: pip install -r requirements-docs.txt
       - name: Set up build cache
-        uses: actions/cache/restore@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        uses: actions/cache/restore@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           key: mkdocs-material-${{ hashfiles('.cache/**') }}
           path: .cache
@@ -45,7 +45,7 @@ jobs:
       - name: Deploy GitHub Pages
         run: mkdocs gh-deploy --force
       - name: Save build cache
-        uses: actions/cache/save@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        uses: actions/cache/save@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           key: mkdocs-material-${{ hashfiles('.cache/**') }}
           path: .cache