update flutter plugin

plugins/flutter/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.9.3
+
++ See https://github.com/blueloveTH/pocketpy/releases
+
 ## 0.8.1
 
 + Bug fix

plugins/flutter/example/pubspec.lock

@@ -108,7 +108,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.8.1"
+    version: "0.9.3"
   sky_engine:
     dependency: transitive
     description: flutter

plugins/flutter/pubspec.yaml

@@ -1,6 +1,6 @@
 name: pocketpy
 description: A lightweight Python interpreter for game engines. It supports Android/iOS/Web.
-version: 0.8.1
+version: 0.9.3
 homepage: https://pocketpy.dev
 repository: https://github.com/blueloveth/pocketpy