Updates changelog by adding a note about GitLab PR search in Launchpad

(#3788, #3795)

Author: sergeibbb

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Added
 
 - Adds Holiday promotion
+- Adds new ability to search for a GitLab MR in the _Launchpad_ — closes [#3788](https://github.com/gitkraken/vscode-gitlens/issues/3788)
 - Adds the ability to get autolinks for branches via the branch name — closes [#3547](https://github.com/gitkraken/vscode-gitlens/issues/3547)
 - Adds GitLab issues to the issues list in the _Start Work_ command when GitLab is connected — closes [#3779](https://github.com/gitkraken/vscode-gitlens/issues/3779)
 - Adds `gitlens.advanced.caching.gitPath` setting to specify whether to cache the git path — closes [#2877](https://github.com/gitkraken/vscode-gitlens/issues/2877)