Bump actions/cache from 4 to 5

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>

.github/workflows/commit.yml

@@ -75,7 +75,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6.0.1
     - name: restore_cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         key: regression-cache-{{ checksum "tests/regression/data.c" }}-v0
         path: tests/regression/cache