Prepare Dart Debug Extension for release (#2346)

dwds/debug_extension_mv3/pubspec.yaml

diff --git a/dwds/debug_extension_mv3/pubspec.yaml b/dwds/debug_extension_mv3/pubspec.yaml
index 4e45909..fdebf18 100644
--- a/dwds/debug_extension_mv3/pubspec.yaml
+++ b/dwds/debug_extension_mv3/pubspec.yaml
@@ -1,6 +1,6 @@
 name: mv3_extension
 publish_to: none
-version: 2.1.1
+version: 2.1.2
 homepage: https://github.com/dart-lang/webdev
 description: >-
   A Chrome extension for Dart debugging.

dwds/debug_extension_mv3/web/manifest_mv3.json

diff --git a/dwds/debug_extension_mv3/web/manifest_mv3.json b/dwds/debug_extension_mv3/web/manifest_mv3.json
index ea731a7..6e52d40 100644
--- a/dwds/debug_extension_mv3/web/manifest_mv3.json
+++ b/dwds/debug_extension_mv3/web/manifest_mv3.json
@@ -1,6 +1,6 @@
 {
   "name": "Dart Debug Extension",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "manifest_version": 3,
   "devtools_page": "static_assets/devtools.html",
   "action": {