PLT-6341/PLT-6342 Update gorp to mattermost fork and add connection timeout setting (#6410)

* Update gorp to mattermost fork and add connection timeout setting

* Add go dependency

* Rename from connection timeout to query timeout

* Properly add gorp dependency

config/config.json

@@ -85,7 +85,8 @@
         "MaxIdleConns": 20,
         "MaxOpenConns": 300,
         "Trace": false,
-        "AtRestEncryptKey": ""
+        "AtRestEncryptKey": "",
+        "QueryTimeout": 30
     },
     "LogSettings": {
         "EnableConsole": true,