fix: gas for remove auth for some reason (#425)

I have no clue why this fixes everything

Author: tyleroooo

v4-client-js/src/clients/modules/post.ts

@@ -1011,7 +1011,7 @@ export class Post {
       undefined,
       Method.BroadcastTxSync,
       undefined,
-      undefined,
+      3,
     );
   }
 }