merge: build(deps): bump actions/cache from 4 to 5 in /.github/workflows (#269)

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](actions/cache@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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/meson.yml

@@ -516,7 +516,7 @@ jobs:
     - name: Restore LLVM from cache
       if: startsWith(matrix.config.name, 'Windows Clang')
       id: llvm-cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: C:/Program Files/LLVM
         key: 'llvm-llvm-project-relid-${{ env.LLVM_RELID }}'