Bump docker/build-push-action from 4 to 6 (#36159)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '6'
  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>

Author: dependabot[bot]

.github/workflows/build_runner_image.yml

@@ -47,7 +47,7 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
     - name: Build and Load to docker
-      uses: docker/build-push-action@v4
+      uses: docker/build-push-action@v6
       with:
         context: ${{ env.working-directory }}
         load: true
@@ -57,7 +57,7 @@ jobs:
     - name: Push Docker image
       if: github.ref == 'refs/heads/master'
       id: docker_build
-      uses: docker/build-push-action@v4
+      uses: docker/build-push-action@v6
       with:
         context: ${{ env.working-directory }}
         push: true