Prepare to publish 0.16.1

PiperOrigin-RevId: 288371477
diff --git a/pubspec.yaml b/pubspec.yaml
index ee60d8f..4ff5a75 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: intl
-version: 0.16.1-dev
+version: 0.16.1
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/intl
 description: >-