deps: Add dev:fake_async

Author: gnprice

pubspec.lock

@@ -274,7 +274,7 @@ packages:
     source: hosted
     version: "2.7.0"
   fake_async:
-    dependency: transitive
+    dependency: "direct dev"
     description:
       name: fake_async
       sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"

pubspec.yaml

@@ -71,6 +71,7 @@ dev_dependencies:
   test: ^1.23.1
   checks: ^0.2.2
   drift_dev: ^2.5.2
+  fake_async: ^1.3.1
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec