Update release notes wrt 2.19.3

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -384,6 +384,8 @@ Cormac Redmond (@credmond)
 Manuel Sugawara (@sugmanue)
  * Contributed #568: Improve ASCII decoding performance for `CBORParser`
   (2.19.0)
+ * Contributed fix for #616: CBOR text gets truncated on decoding
+  (2.19.3)
 
 Josh Curry (@seadbrane)
  * Reported, contributed fix for #571: Unable to deserialize a pojo with IonStruct

release-notes/VERSION-2.x

@@ -24,6 +24,8 @@ No changes since 2.19
   incompatible with each other
  (reported by Raphael W)
  (fix by Vincent E)
+#616: CBOR text gets truncated on decoding
+ (reported, fix contributed by Manuel S)
 
 2.19.2 (18-Jul-2025)