chore(deps): update actions/cache action to v5

Author: renovate[bot]

.github/workflows/docker.yml

@@ -53,7 +53,7 @@ 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: ${{ matrix.container }}-buildx-${{ github.sha }}