build(deps): bump actions/cache from 4 to 5 (#381)

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/main.yml

@@ -67,7 +67,7 @@ jobs:
         file(APPEND "$ENV{GITHUB_ENV}" "CACHE_TIMESTAMP=${current_date}\n")
 
     - name: Update the cache (ccache)
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: "${{ github.workspace }}/ccache"
         key: ${{ env.CACHE_KEY }}_ccache_${{ env.CACHE_TIMESTAMP }}