AdisTS: Update '_db_update' for the new methode prototype.

src/Model/Pollutants/Pollutants.py

@@ -98,7 +98,7 @@ class Pollutants(SQLSubModel):
         return cls._create_submodel(execute)
 
     @classmethod
-    def _db_update(cls, execute, version):
+    def _db_update(cls, execute, version, data=None):
         return True
 
     @classmethod