update flutter (fix #34)

Author: Predidit

pubspec.lock

@@ -1300,4 +1300,4 @@ packages:
     version: "2.2.1"
 sdks:
   dart: ">=3.4.0 <4.0.0"
-  flutter: ">=3.22.2"
+  flutter: ">=3.22.3"

pubspec.yaml

@@ -20,7 +20,7 @@ version: 1.2.6+1
 
 environment:
   sdk: '>=3.2.6 <4.0.0'
-  flutter: 3.22.2
+  flutter: 3.22.3
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions