build(deps): bump actions/cache from 3 to 4

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -99,7 +99,7 @@ jobs:
           echo "date-dayfmt=$(date '+%Y%m%d')" >>"$GITHUB_OUTPUT"
       - name: fetch cached ci image
         id: fetch-ci-image
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ github.workspace }}/.cache/ci-image.tar.zst
           key: ${{ github.workflow }}-image-${{ steps.date.outputs.date-weekfmt }}-${{ hashFiles('Dockerfile') }}-${{ github.sha }}-${{ steps.date.outputs.date-dayfmt }}-${{ github.run_id }}