fix version

Author: isoos

app/lib/shared/versions.dart

@@ -61,8 +61,8 @@ bool shouldGCVersion(String version) =>
     version.compareTo(gcBeforeRuntimeVersion) < 0;
 
 // keep in-sync with SDK version in .mono_repo.yml and Dockerfile
-final String runtimeSdkVersion = '3.9.0';
-final String toolStableDartSdkVersion = '3.8.3';
+final String runtimeSdkVersion = '3.8.0';
+final String toolStableDartSdkVersion = '3.9.0';
 final String toolStableFlutterSdkVersion = '3.32.8';
 
 final semanticToolStableDartSdkVersion =