Update changelog with new change

CHANGELOG.md

@@ -16,7 +16,7 @@
 * Updated the content type of list & map shapes with the `@httpPayload` trait to document content type ([#1840](https://github.com/smithy-lang/smithy/pull/1840))
 * Fixed IDL serializer which would write emtpy `apply` statements to mixed in members of `enums` ([#1865](https://github.com/smithy-lang/smithy/pull/1865))
 * Fixed indentation when formatting text blocks ([#1875](https://github.com/smithy-lang/smithy/pull/1875))
-* Added resource files to source jars ([#1877](https://github.com/smithy-lang/smithy/pull/1877))
+* Added resource files to source jars ([#1877](https://github.com/smithy-lang/smithy/pull/1877), [#1880](https://github.com/smithy-lang/smithy/pull/1880))
 * Fixed a potential resource leak by using a try with resources ([#1878](https://github.com/smithy-lang/smithy/pull/1878))
 
 ### Other