build(deps): bump docker/build-push-action from 6 to 7

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6 to 7.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6...v7)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/action-docker-publish.yml

@@ -49,7 +49,7 @@ jobs:
             ubuntu-26.04
 
       - name: Build and push (Ubuntu 26.04)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile.ubuntu-2604
@@ -99,7 +99,7 @@ jobs:
             ubuntu-24.04
 
       - name: Build and push (Ubuntu 24.04)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile.ubuntu-2404
@@ -147,7 +147,7 @@ jobs:
             ubuntu-22.04
 
       - name: Build and push (Ubuntu 22.04)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile.ubuntu-2204
@@ -195,7 +195,7 @@ jobs:
             ubuntu-20.04
 
       - name: Build and push (Ubuntu 20.04)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile.ubuntu-2004