build(deps): bump actions/cache from 5.0.5 to 6.1.0 (#36561)

Bumps [actions/cache](https://github.com/actions/cache) from 5.0.5 to 6.1.0.
- [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/27d5ce7f107fe9357f9df03efb73ab90386fccae...55cc8345863c7cc4c66a329aec7e433d2d1c52a9)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 6.1.0
  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>

.github/workflows/ci-update.yml

@@ -136,7 +136,7 @@ jobs:
         run: echo "dir=$(npm config get cache)" >> ${GITHUB_OUTPUT}
       - name: 'Cache dependencies'
         if: needs.get-chart.outputs.values-updated == 'true' && github.event.action != 'edited'
-        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9
         with:
           path: ${{ steps.npm-cache-dir.outputs.dir }}
           key: npm-${{ hashFiles('./readme-generator-for-helm/package-lock.json') }}