Don't forget to also upgrade fdmextruder

This one doesn't inherit from fdmprinter so it doesn't get the updated version number.

Contributes to issue CURA-7118.

resources/definitions/fdmextruder.def.json

@@ -6,7 +6,7 @@
         "type": "extruder",
         "author": "Ultimaker",
         "manufacturer": "Unknown",
-        "setting_version": 15,
+        "setting_version": 16,
         "visible": false,
         "position": "0"
     },