update release notes wrt #69

Author: cowtowncoder

release-notes/VERSION

@@ -21,6 +21,7 @@ Modules:
  (contributed by baharclerode@github)
 #60 (avro): Add support for `@Union` and polymorphic types
  (contributed by baharclerode@github)
+#69 (avro): Add support for `@AvroEncode` annotation
 - [avro] Upgrade `avro-core` dep from 1.7.7 to 1.8.1
 
 2.8.8 (not yet released)