Bump docker/build-push-action from 5 to 6 (#127)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

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

.github/workflows/docker-build.yml

@@ -60,7 +60,7 @@ jobs:
 
       - name: Build "${{ steps.prep.outputs.docker-image-name }}" Docker Image
         id: build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           builder: ${{ steps.buildx.outputs.name }}
           context: .

.github/workflows/docker-release.yml

@@ -101,7 +101,7 @@ jobs:
 
       - name: Build "${{ needs.init.outputs.docker-image-name }}:${{ needs.init.outputs.github-ci-sha-short }}-${{ matrix.image-variant }}" Docker Image
         id: build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           builder: ${{ steps.buildx.outputs.name }}
           context: .