build: bump actions/cache from 3 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/linux.yml

@@ -26,7 +26,7 @@ jobs:
           repository: git/git
           ref: ${{ matrix.git-version }}
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         id: cache-git-build
         with:
           key: ${{ runner.os }}-git-${{ matrix.git-version }}