chore(deps): bump actions/cache from 4 to 5

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>

Author: dependabot[bot]

.github/workflows/docker-nginx.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Cache Docker layers
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /tmp/.buildx-cache
           key: nginx-buildx-${{ github.sha }}

.github/workflows/docker-php.yml

@@ -35,7 +35,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
       - name: Cache Docker layers
         id: docker-cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /tmp/.buildx-cache
           key: ${{ matrix.container }}-buildx-${{ github.sha }}
@@ -85,7 +85,7 @@ jobs:
           mv /tmp/.buildx-cache-new /tmp/.buildx-cache
       - name: Save Docker cache
         if: steps.docker-cache.outputs.cache-hit != 'true'
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /tmp/.buildx-cache
           key: ${{ matrix.container }}-buildx-${{ github.sha }}