[native_assets_builder] Fix pub warning in tests

Author: dcharkes

pkgs/native_assets_builder/test/build_runner/helpers.dart

@@ -19,7 +19,7 @@ Future<void> runPubGet({
 }) async {
   final result = await runProcess(
     executable: Uri.file(Platform.resolvedExecutable),
-    arguments: ['pub', '--no-analytics', 'get'],
+    arguments: ['pub', '--suppress-analytics', 'get'],
     workingDirectory: workingDirectory,
     logger: logger,
   );