Add release date for v2.0.0

Author: mbeijen

CHANGES

@@ -1,7 +1,7 @@
 django-simple-menu changelog
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-upcoming: Version 2.0.0
+Version 2.0.0 - Released November 2nd, 2022
 - BREAKING: dropped support for Python < 3.6
 - BREAKING: dropped support for Django < 3.2
 - DEPRECATION: the module is now called "simple_menu" instead of "menu" (#93)