Bump build_runner from 2.2.0 to 2.2.1 in /device_doctor (#2128)

diff --git a/device_doctor/pubspec.lock b/device_doctor/pubspec.lock
index 0b308df..52ce937 100644
--- a/device_doctor/pubspec.lock
+++ b/device_doctor/pubspec.lock
@@ -70,7 +70,7 @@
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.2.1"
   build_runner_core:
     dependency: transitive
     description: