Update go.mod

go.mod

@@ -1,9 +1,9 @@
 module rpc
 
-go 1.16
+go 1.20
 
 require (
-	github.com/gin-gonic/gin v1.7.4
-	github.com/gorilla/websocket v1.4.2
-	github.com/unrolled/secure v1.0.9
+	github.com/gin-gonic/gin v1.9.1
+	github.com/gorilla/websocket v1.5.0
+	github.com/unrolled/secure v1.13.0
 )