Update dart_style to published version 2.0.2

Dart_style 2.0.2 was published with more fixes and a different
hash than the original 2.0.2 commit hash.

Bug: https://github.com/flutter/flutter/issues/86326
Change-Id: I31e8e9a0c6178d38ad62065df869807b899d313c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/206543
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: William Hesse <whesse@google.com>
diff --git a/DEPS b/DEPS
index fd75d7b..ac49b8f 100644
--- a/DEPS
+++ b/DEPS
@@ -103,7 +103,7 @@
   #     and land the review.
   #
   # For more details, see https://github.com/dart-lang/sdk/issues/30164
-  "dart_style_rev": "0fe592042eda5d9eea6fc240a8ee0fe531bb0794",
+  "dart_style_rev": "9d9dff90d9a2e0793ad2f795f36c2777f720eda0",
 
   "dartdoc_rev" : "c9621b92c738ec21a348cc2de032858276e9c774",
   "devtools_rev" : "64cffbed6366329ad05e44d48fa2298367643bb6",