Bump actions/cache from 3.0.6 to 3.0.7

Bumps [actions/cache](https://github.com/actions/cache) from 3.0.6 to 3.0.7.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3.0.6...v3.0.7)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/grafana-docker.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Setup Docker Buildx
         uses: docker/setup-buildx-action@v2.0.0
       - name: Cache Docker layers
-        uses: actions/cache@v3.0.6
+        uses: actions/cache@v3.0.7
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-vwsfriend-grafana-${{ github.sha }}