⬆️ Bump actions/cache from 4 to 5 (#3988)

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

Author: dependabot[bot]

.github/workflows/ruby-tests.yml

@@ -43,15 +43,15 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache yarn
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.yarn-cache.outputs.dir }}
           key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
           restore-keys: |
             ${{ runner.os }}-yarn-
 
       - name: Cache gems
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: vendor/bundle
           key: ${{ runner.os }}-gem-v1-${{ hashFiles('**/Gemfile.lock') }}