Update changelog for 5.4.1 release

CHANGELOG.md

@@ -1,5 +1,16 @@
 # OverReact Changelog
 
+## 5.4.1
+- [#958] Officially support Dart 3, raise SDK constraint explicitly
+    - This did not involve any changes that would affect consumers; previous null-safe versions should also work in Dart 3.
+    - Note: there's a known bug in Dart >=3.3.0 <3.5.0 that breaks behavior in DDC of certain functions passed to components, 
+      such as refs and potentially JS callback props: https://github.com/dart-lang/sdk/issues/56897. 
+
+      During development, we recommend either avoiding those Dart versions or compiling with dart2js.
+
+- [#960] Raise `analyzer` upper bound to allow 6.x
+- [#957] Docs: add more details around connect vs hooks
+
 ## 5.4.0
 - [#941] Add Dart wrapper for React [lazy](https://react.dev/reference/react/lazy)
 - [#952] Docs: fix diagram formatting in null safety migration guide