Update build_runner package

Author: theEvilReaper

pubspec.lock

@@ -85,10 +85,10 @@ packages:
     dependency: "direct dev"
     description:
       name: build_runner
-      sha256: "804c47c936df75e1911c19a4fb8c46fa8ff2b3099b9f2b2aa4726af3774f734b"
+      sha256: "4e54dbeefdc70691ba80b3bce3976af63b5425c8c07dface348dfee664a0edc1"
       url: "https://pub.dev"
     source: hosted
-    version: "2.8.0"
+    version: "2.9.0"
   built_collection:
     dependency: transitive
     description:
@@ -301,14 +301,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
-  frontend_server_client:
-    dependency: transitive
-    description:
-      name: frontend_server_client
-      sha256: f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.0.0"
   glob:
     dependency: transitive
     description:

pubspec.yaml

@@ -29,7 +29,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^6.0.0
-  build_runner: ^2.8.0
+  build_runner: ^2.9.0
   freezed: ^3.2.3
   json_serializable: ^6.11.1