Dart: Bump mojo_sdk package version

Review URL: https://codereview.chromium.org/2007523004 .

mojo/dart/packages/mojo_sdk/CHANGELOG.md

diff --git a/mojo/dart/packages/mojo_sdk/CHANGELOG.md b/mojo/dart/packages/mojo_sdk/CHANGELOG.md
index f95fc11..a32b23d 100644
--- a/mojo/dart/packages/mojo_sdk/CHANGELOG.md
+++ b/mojo/dart/packages/mojo_sdk/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 0.2.27
+
+  - 28 changes: https://github.com/domokit/mojo/compare/9fee976...24614f9
+
+  MOJO_SDK: 24614f9961413d4527a5b1bc525102380f825705
+
 ## 0.2.26
 
   - 21 changes: https://github.com/domokit/mojo/compare/ef526bb...107bac0

mojo/dart/packages/mojo_sdk/pubspec.yaml

diff --git a/mojo/dart/packages/mojo_sdk/pubspec.yaml b/mojo/dart/packages/mojo_sdk/pubspec.yaml
index 1ecdda8..170b67c 100644
--- a/mojo/dart/packages/mojo_sdk/pubspec.yaml
+++ b/mojo/dart/packages/mojo_sdk/pubspec.yaml
@@ -1,8 +1,8 @@
 author: Chromium Authors <mojo-dev@googlegroups.com>
 dependencies:
-  mojo: 0.4.22
-  mojo_services: 0.4.29
+  mojo: 0.4.23
+  mojo_services: 0.4.30
 description: A meta package for the Dart Mojo SDK
 homepage: https://github.com/domokit/mojo
 name: mojo_sdk
-version: 0.2.26
+version: 0.2.27