Update ChangeLog

Author: pkolbus

ChangeLog

@@ -11,6 +11,10 @@ Release date: TBA
 
 * Introduce logic for checking deprecated attributes in DeprecationMixin.
 
+* Reduce usage of blacklist/whitelist terminology. Notably, ``extension-pkg-allow-list`` is an
+  alternative to ``extension-pkg-whitelist`` and the message ``blacklisted-name`` is now emitted as
+  ``disallowed-name``. The previous names are accepted to maintain backward compatibility.
+
 
 What's New in Pylint 2.7.3?
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