Prepare to publish (#1752)

Drop `-dev` from versions.
diff --git a/pkgs/test/CHANGELOG.md b/pkgs/test/CHANGELOG.md
index 20d409c..51aa014 100644
--- a/pkgs/test/CHANGELOG.md
+++ b/pkgs/test/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 1.21.5-dev
+## 1.21.5
 
 * Fix `printOnFailure` output to be associated with the correct test.
 * Migrate all dom interactions to static interop.
diff --git a/pkgs/test/pubspec.yaml b/pkgs/test/pubspec.yaml
index c37e469..530757f 100644
--- a/pkgs/test/pubspec.yaml
+++ b/pkgs/test/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test
-version: 1.21.5-dev
+version: 1.21.5
 description: >-
   A full featured library for writing and running Dart tests across platforms.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test
diff --git a/pkgs/test_api/CHANGELOG.md b/pkgs/test_api/CHANGELOG.md
index fcfb296..9c72ea0 100644
--- a/pkgs/test_api/CHANGELOG.md
+++ b/pkgs/test_api/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.4.13-dev
+## 0.4.13
 
 * Fix `printOnFailure` output to be associated with the correct test.
 
diff --git a/pkgs/test_api/pubspec.yaml b/pkgs/test_api/pubspec.yaml
index d49195a..46ff8c1 100644
--- a/pkgs/test_api/pubspec.yaml
+++ b/pkgs/test_api/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_api
-version: 0.4.13-dev
+version: 0.4.13
 description: A library for writing Dart tests.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test_api
 
diff --git a/pkgs/test_core/CHANGELOG.md b/pkgs/test_core/CHANGELOG.md
index 877f745..29dfa9c 100644
--- a/pkgs/test_core/CHANGELOG.md
+++ b/pkgs/test_core/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.4.17-dev
+# 0.4.17
 
 * Support the latest `package:test_api`.
 * Support the latest `package:frontend_server_client`.
diff --git a/pkgs/test_core/pubspec.yaml b/pkgs/test_core/pubspec.yaml
index 7ba2165..badc074 100644
--- a/pkgs/test_core/pubspec.yaml
+++ b/pkgs/test_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_core
-version: 0.4.17-dev
+version: 0.4.17
 description: A basic library for writing tests and running them on the VM.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test_core