Lower meta dependency to version 1.12.0 to match version pinned by Flutter.

Author: amugofjava

pubspec.yaml

@@ -13,7 +13,7 @@ dependencies:
   crypto: ^3.0.1
   dio: ^5.4.3+1
   rss_dart: ^1.0.8
-  meta: ^1.15.0
+  meta: ^1.12.0
 
 dev_dependencies:
   flutter_lints: ^4.0.0