build(deps): bump docker/build-push-action from 5 to 6 (#661)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/containers.yaml

@@ -49,7 +49,7 @@ jobs:
 
       - name: build and push
         id: docker_build_zsh_versions
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         timeout-minutes: 90 # compiling older zsh versions take a long time
         with:
           push: ${{ github.event.number == 0 }}
@@ -91,7 +91,7 @@ jobs:
 
       - name: build & push new image
         id: docker_build_latest
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         if: github.ref == 'refs/heads/main'
         with:
           push: true