latest deps (dart-lang/pubspec_parse#69)

pkgs/pubspec_parse/pubspec.yaml

diff --git a/pkgs/pubspec_parse/pubspec.yaml b/pkgs/pubspec_parse/pubspec.yaml
index bd0342d..469e004 100644
--- a/pkgs/pubspec_parse/pubspec.yaml
+++ b/pkgs/pubspec_parse/pubspec.yaml
@@ -22,7 +22,7 @@
   path: ^1.5.1
   pedantic: ^1.4.0
   # Needed because we are configuring `combining_builder`
-  source_gen: ^0.9.5
+  source_gen: ^1.0.0
   stack_trace: ^1.9.2
   test: ^1.0.0
   test_descriptor: ^2.0.0