update example app flutter sdk dependency range

Author: britannio

in_app_review/example/pubspec.lock

@@ -364,5 +364,5 @@ packages:
     source: hosted
     version: "3.1.0"
 sdks:
-  dart: ">=3.8.1 <4.0.0"
+  dart: ">=3.8.0-0 <4.0.0"
   flutter: ">=3.29.0"

in_app_review/example/pubspec.yaml

@@ -5,7 +5,7 @@ description: "Demonstrates how to use the in_app_review plugin."
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
 environment:
-  sdk: ^3.8.1
+  sdk: '>=2.17.0 <4.0.0'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions