fix pub warning

chenenyu · chenenyu · commit 0a9e294f4613 · 2022-05-16T15:39:34.000+08:00
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://github.com/chenenyu/lifecycle
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=3.0.0 <4.0.0"
+  flutter: ">=3.0.0"
 
 dependencies:
   flutter:
