Update build.yaml

Author: jeffmaki

.github/workflows/build.yaml

@@ -36,7 +36,7 @@ jobs:
           uses: docker/setup-buildx-action@v3
 
         - name: Cache Docker layers
-          uses: actions/cache@v2
+          uses: actions/cache@v4
           with:
             path: /tmp/.buildkit-cache
             key: ${{ runner.os }}-buildx-${{ github.sha }}