Update release notes wrt #908

Author: k163377

release-notes/CREDITS-2.x

@@ -18,6 +18,7 @@ Contributors:
 # 2.18.3 (not yet released)
 
 WrongWrong (@k163377)
+* #908: Additional fixes related to #904.
 * #904: Fixed an error when serializing a `value class` that wraps a `Map`
 * #900: Fixed an issue where some tests were not running
 

release-notes/VERSION-2.x

@@ -18,7 +18,9 @@ Co-maintainers:
 
 2.18.3 (not yet released)
 
-#904: An error that occurred when serializing a `value class` that wraps a `Map`(#873) has been fixed.
+#904: Fixed a problem where context was not being propagated properly when serializing an unboxed value of `value class`
+  or a value retrieved with `JsonValue`.
+  This fixes a problem where an error would occur when serializing a `value class` that wraps a `Map`(#873).
 
 2.18.2 (27-Nov-2024)
 2.18.1 (28-Oct-2024)