[flutter_plugin_tools] release 0.3.0 (#4109)

diff --git a/script/tool/CHANGELOG.md b/script/tool/CHANGELOG.md
index 1b6cf2a..94514e3 100644
--- a/script/tool/CHANGELOG.md
+++ b/script/tool/CHANGELOG.md
@@ -1,4 +1,4 @@
-## NEXT
+## 0.3.0
 
 - Add a --build-id flag to `firebase-test-lab` instead of hard-coding the use of
   `CIRRUS_BUILD_ID`. `CIRRUS_BUILD_ID` is the default value for that flag, for backward
diff --git a/script/tool/pubspec.yaml b/script/tool/pubspec.yaml
index 5d2200a..6273fe9 100644
--- a/script/tool/pubspec.yaml
+++ b/script/tool/pubspec.yaml
@@ -1,7 +1,7 @@
 name: flutter_plugin_tools
 description: Productivity utils for flutter/plugins and flutter/packages
 repository: https://github.com/flutter/plugins/tree/master/script/tool
-version: 0.2.0
+version: 0.3.0
 
 dependencies:
   args: ^2.1.0