chore: Upgrade Flutter to 3.38.9

Author: dependabot[bot]

pubspec.yaml

@@ -20,7 +20,7 @@ version: 1.0.0+1
 
 environment:
   sdk: ^3.5.4
-  flutter: '3.38.7'
+  flutter: '3.38.9'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions