build(deps): Bump docker/build-push-action from 6.14.0 to 6.15.0

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@v6.14.0...v6.15.0)

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

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

Author: dependabot[bot]

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

@@ -42,7 +42,7 @@ jobs:
             --name registry registry:2
 
       - name: Build docker-salt-master image
-        uses: docker/build-push-action@v6.14.0
+        uses: docker/build-push-action@v6.15.0
         with:
           context: .
           file: ./Dockerfile

.github/workflows/publish.yml

@@ -112,7 +112,7 @@ jobs:
           password: ${{ secrets.QUAYIO_PASSWORD }}
 
       - name: Build
-        uses: docker/build-push-action@v6.14.0
+        uses: docker/build-push-action@v6.15.0
         with:
           context: .
           file: ./Dockerfile

.github/workflows/security-analysis.yml

@@ -33,7 +33,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Build docker-salt-master image
-        uses: docker/build-push-action@v6.14.0
+        uses: docker/build-push-action@v6.15.0
         with:
           context: .
           file: ./Dockerfile