build(deps): bump docker/build-push-action from 4 to 6

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](https://github.com/docker/build-push-action/compare/v4...v6)

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

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

.github/workflows/ci.yml

@@ -34,7 +34,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           file: './application/Dockerfile'
           platforms: linux/amd64

.github/workflows/cife.yml

@@ -35,7 +35,7 @@ jobs:
 
       # Runs a single command using the runners shell
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           file: './frontend/Dockerfile'
           platforms: linux/amd64, linux/arm64

.github/workflows/docker-develop-build.yml

@@ -36,7 +36,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           file: './application/Dockerfile'
           platforms: linux/amd64

.github/workflows/docker-develop-fe-build.yml

@@ -36,7 +36,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           file: './frontend/Dockerfile'
           platforms: linux/amd64