Update workflow actions

Signed-off-by: Han Verstraete (OpenFaaS Ltd) <[email protected]>

Author: welteki

.github/workflows/build.yaml

@@ -28,7 +28,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
       - name: Local build
         id: local_build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           outputs: "type=docker,push=false"
           platforms: linux/amd64

.github/workflows/publish.yaml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Release build
         id: release_build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           outputs: "type=registry,push=true"
           platforms: linux/amd64,linux/arm64