Bump docker/build-push-action from 5 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...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/build.yml

@@ -153,7 +153,7 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Push to DockerHub and GHCR
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           push: true
           platforms: linux/amd64,linux/arm64

.github/workflows/release.yml

@@ -93,7 +93,7 @@ jobs:
     - name: Push to DockerHub and GHCR
       if: ${{ inputs.current_release }}
       id: build_and_push
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         platforms: linux/amd64,linux/arm64
         push: true