[flutter_local_notifications] updated pubspec and changelog for 17.2.3 release #216

Job	Run time
Run Dart Analyzer	41s
Build Android example app (stable channel)	5m 7s
Build iOS example app (3.13)	2m 10s
Build Android example app (3.13)	3m 40s
Build iOS example app (stable channel)	2m 43s
Build Linux example app (3.13)	1m 6s
Build Linux example app (stable channel)	1m 0s
Build macOS example app (3.13)	3m 27s
Build macOS example app (stable channel)	3m 3s
Dart formatting checks	28s
Run integration tests (Android)	6m 6s
Run integration tests (iOS)	9m 40s
java_format	6s
objc_format	9s
swift_format	16s
Run all unit tests (Android)	5m 33s
Run all unit tests (Dart)	56s
	46m 11s

Provide feedback