[release] Add 2.17.3 release notes

Change-Id: I92ba9f098153a52797c2e294e36cb197d7b69f48
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/246640
Reviewed-by: Alexander Thomas <athom@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa1a5a6..b1291f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,16 @@
-## 2.17.2 - 2022-06-01
+## 2.17.3 - 2022-06-01
 
 This is a patch release that fixes:
 
 - a Dart VM compiler crash (issue [#100375][]).
-- code completion when writing method overrides (issue [#49086][]).
-- `dart pub login` crashes due to `null` response (issue [pub#3424][])
+- code completion when writing method overrides (issue [#49027][]).
+- the `dart pub login` command (issue [#3424][]).
+- analysis of enhanced enums (issue [#49097][]).
 
 [#100375]: https://github.com/flutter/flutter/issues/100375
-[#49086]: https://github.com/dart-lang/sdk/issues/49086
-[pub#3424]: https://github.com/dart-lang/pub/issues/3424
+[#49027]: https://github.com/dart-lang/sdk/issues/49027
+[#3424]: https://github.com/dart-lang/pub/issues/3424
+[#49097]: https://github.com/dart-lang/sdk/issues/49097
 
 ## 2.17.1 - 2022-05-18