chore(deps): update docker/build-push-action action to v7 (#143)

| datasource  | package                  | from | to |
| ----------- | ------------------------ | ---- | -- |
| github-tags | docker/build-push-action | v6   | v7 |

Co-authored-by: dreadnode-renovate-bot[bot] <184170622+dreadnode-renovate-bot[bot]@users.noreply.github.com>

Author: dreadnode-renovate-bot[bot]

.github/workflows/docker-build.yml

@@ -22,7 +22,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           platforms: linux/amd64,linux/arm64
           push: true