Update deps for stable channel

[johnpryan]

This is required in order to run dart_services locally on the stable channel.

I also needed to run:

dart pub global activate grinder
grind build-storage-artifacts

[johnpryan]

This depends on dart-lang/shelf#467

[github-actions]

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// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
// 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.

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Files
pkgs/samples/lib/brick_breaker.dart
pkgs/samples/lib/fibonacci.dart
pkgs/samples/lib/google_ai.dart
pkgs/samples/lib/hello_world.dart
pkgs/samples/lib/main.dart
pkgs/samples/lib/sunflower.dart

[devoncarew]

It does look like there's some follow-up for for beta and main.