Bump docker/build-push-action from 6.14.0 to 6.15.0 (#1166)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.14.0 to 6.15.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@0adf995...471d1dc)

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

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

Author: dependabot[bot]

.github/workflows/image-build.yml

@@ -53,7 +53,7 @@ jobs:
           git lfs pull
       - name: Test build - ${{ inputs.platform }}
         id: docker_build
-        uses: docker/build-push-action@0adf9959216b96bec444f325f1e493d4aa344497 # v5
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v5
         with:
           context: .
           file: ./Dockerfile

.github/workflows/image-publish.yml

@@ -76,7 +76,7 @@ jobs:
           git lfs pull
       - name: Build and Push Image
         id: image-build
-        uses: docker/build-push-action@0adf9959216b96bec444f325f1e493d4aa344497 # v6
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64