use trust mode

modules/common/src/main/scala/com.snowplowanalytics.snowplow.enrich/common/enrichments/registry/sqlquery/Rdbms.scala

@@ -60,7 +60,7 @@ object Rdbms {
 
     val connectionString =
       s"jdbc:mysql://$host:$port/$database?permitMysqlScheme&user=$username&password=$password" ++ (if (sslMode)
-                                                                                                      "&sslMode=verify-full"
+                                                                                                      "&sslMode=trust"
                                                                                                     else
                                                                                                       "&sslMode=disable")
   }