update flutter plugin

plugins/flutter/CHANGELOG.md

@@ -1,3 +1,3 @@
-## 0.4.7+1
+## 0.4.7+2
 
 The initial version. Hello, world!

plugins/flutter/pubspec.yaml

@@ -1,6 +1,6 @@
 name: pocketpy
 description: A lightweight Python interpreter for game engines.
-version: 0.4.7+1
+version: 0.4.7+2
 homepage: https://pocketpy.dev
 repository: https://github.com/blueloveth/pocketpy