Update dependencies

Author: olexale

example/pubspec.yaml

@@ -10,6 +10,6 @@ dependencies:
 dev_dependencies:
   bdd_widget_test:
     path: ../
-  build_runner: null
+  build_runner: ^2.0.1
   flutter_test:
     sdk: flutter

pubspec.lock

@@ -154,14 +154,14 @@ packages:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   dart_style:
     dependency: transitive
     description:
       name: dart_style
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.0.1"
   extra_pedantic:
     dependency: "direct dev"
     description:

pubspec.yaml

@@ -18,5 +18,5 @@ dependencies:
   path: ^1.8.0
 
 dev_dependencies:
-  build_runner: null
+  build_runner: ^2.0.1
   extra_pedantic: ^1.3.0