action flutter version에 대응하는 web 패키지 버전 변경

Author: ph-value

pubspec.yaml

@@ -22,7 +22,7 @@ dependencies:
 
   yaml: ^3.1.2
   url_launcher: ^6.0.20
-  web: ^^0.5.1
+  web: ^0.5.1
 
 dev_dependencies:
   flutter_test: