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

i18n/en.json

@@ -4131,6 +4131,10 @@
     "id": "model.config.is_valid.sql_idle.app_error",
     "translation": "Invalid maximum idle connection for SQL settings.  Must be a positive number."
   },
+  {
+    "id": "model.config.is_valid.sql_query_timeout.app_error",
+    "translation": "Invalid query timeout for SQL settings.  Must be a positive number."
+  },
   {
     "id": "model.config.is_valid.sql_max_conn.app_error",
     "translation": "Invalid maximum open connection for SQL settings.  Must be a positive number."