[release] Add release notes for 3.2.3 stable

Change-Id: I65d9ddd93f2e41f1a8dbea799c074355636891f1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/340320
Reviewed-by: William Hesse <whesse@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b93514..b874dad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -94,6 +94,22 @@
 
 [`collection_methods_unrelated_type`]: https://dart.dev/lints/collection_methods_unrelated_type
 
+## 3.2.3 - 2023-12-06
+
+This is a patch release that:
+
+- Disallows final fields to be used in a constant context during analysis
+  (issue [#54232][]).
+- Upgrades Dart DevTools to version 2.28.4 (issue [#54213][])
+- Fixes new AOT snapshots in the SDK failing with SIGILL in ARM
+  environments that don't support the integer division
+  instructions or x86-64 environments that don't support
+  SSE4.1  (issue [#54215][]).
+
+[#54232]: https://github.com/dart-lang/sdk/issues/54232
+[#54213]: https://github.com/dart-lang/sdk/issues/54213
+[#54215]: https://github.com/dart-lang/sdk/issues/54215
+
 ## 3.2.2 - 2023-11-29
 
 This is a patch release that: