Bump docker/build-push-action in the dependency-updates group

Bumps the dependency-updates group with 1 update: [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `docker/build-push-action` from 6.13.0 to 6.14.0
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6.13.0...v6.14.0)

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

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

.github/workflows/build-image-on-push.yml

@@ -44,7 +44,7 @@ jobs:
       -
         name: Test build of image
         id: build
-        uses: docker/build-push-action@v6.13.0
+        uses: docker/build-push-action@v6.14.0
         with:
           push: false
           load: true

.github/workflows/update-image-on-push.yml

@@ -55,7 +55,7 @@ jobs:
         uses: actions/checkout@v4
       -
         name: Build and and push by digest
-        uses: docker/build-push-action@v6.13.0
+        uses: docker/build-push-action@v6.14.0
         id: build
         with:
           outputs: type=image,"name=${{ env.GHCR_REPO }}",push-by-digest=true,name-canonical=true,push=true