Bump build_runner from 2.3.0 to 2.3.2 in /app_dart (#2233)

diff --git a/app_dart/pubspec.lock b/app_dart/pubspec.lock
index 1f0855e..7d174b1 100644
--- a/app_dart/pubspec.lock
+++ b/app_dart/pubspec.lock
@@ -98,7 +98,7 @@
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.0"
+    version: "2.3.2"
   build_runner_core:
     dependency: transitive
     description:
@@ -224,7 +224,7 @@
       name: frontend_server_client
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "3.0.0"
   gcloud:
     dependency: "direct main"
     description:
diff --git a/app_dart/pubspec.yaml b/app_dart/pubspec.yaml
index df7e169..0d300b8 100644
--- a/app_dart/pubspec.yaml
+++ b/app_dart/pubspec.yaml
@@ -34,7 +34,7 @@
   truncate: ^3.0.1
 
 dev_dependencies:
-  build_runner: ^2.3.0
+  build_runner: ^2.3.2
   fake_async: ^1.3.1
   flutter_lints: ^1.0.4
   json_serializable: ^6.5.0