chore(deps): bump actions/cache from 4 to 5 in the github-actions group (#2719)

Bumps the github-actions group with 1 update: [actions/cache](https://github.com/actions/cache).


Updates `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
  dependency-group: github-actions
...

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

.github/workflows/pull-request.yml

@@ -55,7 +55,7 @@ jobs:
           cache: pnpm
 
       - name: cache Next.js build
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: apps/readest-app/.next/cache
           key: nextjs-${{ matrix.config.platform }}-${{ github.sha }}-${{ hashFiles('pnpm-lock.yaml') }}