fix(deps): update dependency build to v3

Author: renovate[bot]

pubspec.yaml

@@ -7,7 +7,7 @@ environment:
   sdk: ">=2.17.0 <3.0.0"
 
 dependencies:
-  build: ^2.2.1
+  build: ^3.0.0
   path: ^1.8.0
   recase: ^4.0.0
   source_gen: ^2.0.0