[stream_transform] bump to latest lints (#1945)

pkgs/stream_transform/CHANGELOG.md

diff --git a/pkgs/stream_transform/CHANGELOG.md b/pkgs/stream_transform/CHANGELOG.md
index a71b2fb..5c6a78d 100644
--- a/pkgs/stream_transform/CHANGELOG.md
+++ b/pkgs/stream_transform/CHANGELOG.md
@@ -1,3 +1,5 @@
+## 2.1.2-wip
+
 ## 2.1.1
 
 - Require Dart 3.1 or greater

pkgs/stream_transform/lib/src/common_callbacks.dart

diff --git a/pkgs/stream_transform/lib/src/common_callbacks.dart b/pkgs/stream_transform/lib/src/common_callbacks.dart
index c239220..e211cf9 100644
--- a/pkgs/stream_transform/lib/src/common_callbacks.dart
+++ b/pkgs/stream_transform/lib/src/common_callbacks.dart
@@ -2,4 +2,4 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-void ignoreArgument(_) {}
+void ignoreArgument(Object? _) {}

pkgs/stream_transform/pubspec.yaml

diff --git a/pkgs/stream_transform/pubspec.yaml b/pkgs/stream_transform/pubspec.yaml
index 1e2298a..f17bad3 100644
--- a/pkgs/stream_transform/pubspec.yaml
+++ b/pkgs/stream_transform/pubspec.yaml
@@ -1,5 +1,5 @@
 name: stream_transform
-version: 2.1.1
+version: 2.1.2-wip
 description: A collection of utilities to transform and manipulate streams.
 repository: https://github.com/dart-lang/tools/tree/main/pkgs/stream_transform
 
@@ -8,6 +8,6 @@
 
 dev_dependencies:
   async: ^2.5.0
-  dart_flutter_team_lints: ^2.0.0
+  dart_flutter_team_lints: ^3.0.0
   fake_async: ^1.3.0
   test: ^1.16.0