Do not update pigeon dart version

reidbaker · reidbaker · commit 1045ced3a769 · 2025-10-09T15:29:07.000-04:00
diff --git a/packages/pigeon/example/app/pubspec.yaml b/packages/pigeon/example/app/pubspec.yaml
@@ -4,7 +4,7 @@ publish_to: 'none'
 version: 1.0.0
 
 environment:
-  sdk: ^3.9.0
+  sdk: ^3.7.0
 
 dependencies:
   flutter:
