Update credits too

cowtowncoder · cowtowncoder · commit 74ccb0ba335d · 2021-03-30T15:42:25.000-07:00
diff --git a/release-notes/CREDITS-2.x b/release-notes/CREDITS-2.x
@@ -180,6 +180,8 @@ Fabian Meumertzheim (fmeum@github)
  (2.12.3)
 * Reported #266: (smile)  ArrayIndexOutOfBoundsException in SmileParser._decodeShortUnicodeValue()
  (2.12.3)
+* Reported #268: (smile) Handle sequence of Smile header markers without recursion
+ (2.12.3)
 
 (jhhladky@github)
 
