add version in changelog/package.json files (#25766)

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CHANGELOG.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [12.2.0]
+
 ## [11.16.7]
 ### Fixed
 - Fix bug that breaks dapps that expect users to switch chains manually([#25046]https://github.com/MetaMask/metamask-extension/pull/25046)
@@ -4785,7 +4787,8 @@ Update styles and spacing on the critical error page  ([#20350](https://github.c
 - Added the ability to restore accounts from seed words.
 
 
-[Unreleased]: https://github.com/MetaMask/metamask-extension/compare/v11.16.7...HEAD
+[Unreleased]: https://github.com/MetaMask/metamask-extension/compare/v12.2.0...HEAD
+[12.2.0]: https://github.com/MetaMask/metamask-extension/compare/v11.16.7...v12.2.0
 [11.16.7]: https://github.com/MetaMask/metamask-extension/compare/v11.16.6...v11.16.7
 [11.16.6]: https://github.com/MetaMask/metamask-extension/compare/v11.16.5...v11.16.6
 [11.16.5]: https://github.com/MetaMask/metamask-extension/compare/v11.16.4...v11.16.5

package.json

@@ -1,6 +1,6 @@
 {
   "name": "metamask-crx",
-  "version": "11.16.7",
+  "version": "12.2.0",
   "private": true,
   "repository": {
     "type": "git",