build(deps): 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](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]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -111,7 +111,7 @@ jobs:
           go_version=$(go version | grep -oP 'go\d+\.\d+\.\d+' | sed -E 's/go([0-9]+)\.([0-9]+)\.([0-9]+)/\1\.\2\.\3/')
           echo "GO_VERSION=$go_version" >> $GITHUB_ENV
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: /root/.vagrant.d
           key: vagrant-${{ env.BOX }}