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] <[email protected]>

.github/workflows/test-build-publish.yml

@@ -100,7 +100,7 @@ jobs:
 
       # Builds docker image and allow scoped caching
       - name: build Kapitan Image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           push: False 
           platforms: ${{ matrix.platform }}
@@ -173,7 +173,7 @@ jobs:
         env:
           DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME}}
         if: env.DOCKERHUB_USERNAME != null
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           platforms: ${{ matrix.platform }}
           push: true