Update std and check if socket is closed#32

I am checking out your library and so far it looks promising! However, after setting up the deno server, it would crash with `error: Uncaught (in promise) ConnectionReset: Socket has already been closed`. I've added a check to return if the socket is closed: https://github.com/Jack-Works/async-call-rpc/blob/12cbb823f67d7da27a491f042ba1a29a67e1d3f6/utils/deno/websocket.server.ts#L28-L31 if (websocket.isClosed) return ---- Also, the std is quite outdated, so I've updated it to `@0.106.0` https://github.com/Jack-Works/async-call-rpc/blob/12cbb823f67d7da27a491f042ba1a29a67e1d3f6/utils/deno/websocket.server.ts#L1-L2 ---- This seems to work now, but still might need to be tested. Please let me know what you think and if this can be updated here.