client: bump rpc keepAliveTimeout to fix micro-eth-signer blocking (?) keepAlive

Author: jochem-brouwer

packages/client/src/util/rpc.ts

@@ -209,6 +209,7 @@ export function createRPCServerListener(opts: CreateRPCServerListenerOpts): jays
   }
   app.use(server.middleware())
   const httpServer = createServer(app)
+  httpServer.keepAliveTimeout = 20_000
   return httpServer
 }