Add "mono" to WINETRICKS_RUN env var

I don't really know why but I had problems with the dotnet6 installation but the installation is working well by installing mono first.

It seems others people than me was having the problem so it may be a good idea to add it as a default value.

game_eggs/steamcmd_servers/v_rising/v_rising_bepinex/egg-v-rising-bep-in-ex.json

@@ -284,7 +284,7 @@
             "name": "WINETRICKS_RUN",
             "description": "",
             "env_variable": "WINETRICKS_RUN",
-            "default_value": "vcrun2019 dotnet48 dotnet6",
+            "default_value": "mono vcrun2019 dotnet48 dotnet6",
             "user_viewable": false,
             "user_editable": false,
             "rules": "required|string|max:50",
@@ -301,4 +301,4 @@
             "field_type": "text"
         }
     ]
-}
+}