prepare for 17.2.1 release (#2357)

Author: MaikuB

flutter_local_notifications/CHANGELOG.md

@@ -1,3 +1,7 @@
+## [17.2.1]
+
+* [Android] fixed issue [#2329](https://github.com/MaikuB/flutter_local_notifications/issues/2329) where a compilation issue could occur due to ambiguity between Android APIs being called. Thanks to the PR from [Greg Price](https://github.com/gnprice)
+
 ## [17.2.0]
 
 * [Android][iOS][macOS] added `periodicallyShowWithDuration()` method that allows for having a notification periodically shown based on a specified duration. The duration will need to be at least a minute. Thanks to the PR from [Mateusz Łuczak](https://github.com/mateuszluczak1996)

flutter_local_notifications/pubspec.yaml

@@ -2,7 +2,7 @@ name: flutter_local_notifications
 description: A cross platform plugin for displaying and scheduling local
   notifications for Flutter applications with the ability to customise for each
   platform.
-version: 17.2.0
+version: 17.2.1
 homepage: https://github.com/MaikuB/flutter_local_notifications/tree/master/flutter_local_notifications
 issue_tracker: https://github.com/MaikuB/flutter_local_notifications/issues