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@8c0edbc76e98fa90f69d9a2c020dcb50019dc325 # tag=v2.2.1
       - name: Cache Docker layers
-        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # tag=v3.0.11
+        uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2 # v4.0.0
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}

.github/workflows/rust.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # tag=v3
-      - uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7 # tag=v3.0.11
+      - uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2 # v4.0.0
         with:
           path: |
             ~/.cargo/registry