Bump docker/build-push-action from 4 to 5

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 5.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v5)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-matrix.yml

@@ -51,7 +51,7 @@ jobs:
       -
         name: Build and push by digest
         id: build
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           platforms: ${{ matrix.platform }}

.github/workflows/dockerimage.yml

@@ -37,7 +37,7 @@ jobs:
 
     # https://github.com/marketplace/actions/build-and-push-docker-images
     - name: Build the Docker image
-      uses: docker/build-push-action@v4
+      uses: docker/build-push-action@v5
       with:
         context: .
         tags: justdanz/nginx