fix: remove deprecated syntax in goreleaser

`binaries` in `docker` is now deprecated
(https://goreleaser.com/deprecations#dockerbinaries).

.goreleaser.yml

@@ -35,7 +35,7 @@ dockers:
   -
     goos: linux
     goarch: amd64
-    binaries:
+    ids:
     - listmonk
     image_templates:
     - "listmonk/listmonk:latest"