Update actions/cache action to v4

Author: renovate[bot]

.github/workflows/docker-push.yml

@@ -21,7 +21,7 @@ jobs:
           echo ::set-output name=tag::${GITHUB_REF_STRIPPED}
       - uses: docker/setup-buildx-action@4fd812986e6c8c2a69e18311145f9371337f27d4 # v3.4.0
       - name: Cache Docker layers
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # tag=v3.0.11
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}

.github/workflows/rust.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
-      - uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # tag=v3.0.11
+      - uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           path: |
             ~/.cargo/registry