Update release notes wrt #3055

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -1198,7 +1198,9 @@ Marc Carter (drekbour@github)
   * Contributed #43 implementation: Add option to resolve type from multiple existing properties,
    `@JsonTypeInfo(use=DEDUCTION)`
   (2.12.0)
- 
+  * Contributed #3055: Polymorphic subtype deduction ignores `defaultImpl` attribute
+  (2.12.2)
+
 Mike Gilbode (gilbode@github)
   * Reported #792: Deserialization Not Working Right with Generic Types and Builders
   (2.12.0)

release-notes/VERSION-2.x

@@ -14,6 +14,8 @@ Project: jackson-databind
  (fix contributed by Migwel@github)
 #3038: Two cases of incorrect error reporting about DeserializationFeature
  (reported by Jelle V)
+#3055: Polymorphic subtype deduction ignores `defaultImpl` attribute
+ (contributed by drekbour@github)
 #3056: MismatchedInputException: Cannot deserialize instance of
   `com.fasterxml.jackson.databind.node.ObjectNode` out of VALUE_NULL token
  (reported by Stexxen@github)