Bump version to v1.4.6 (#805)

* Bump version to v1.4.6

* Update CHANGELOG.md

Co-authored-by: adityasharad <adityasharad@users.noreply.github.com>
Co-authored-by: Aditya Sharad <6874315+adityasharad@users.noreply.github.com>

Author: github-actions[bot]

extensions/ql-vscode/package-lock.json

@@ -4,7 +4,7 @@
   "description": "CodeQL for Visual Studio Code",
   "author": "GitHub",
   "private": true,
-  "version": "1.4.5",
+  "version": "1.4.6",
   "publisher": "GitHub",
   "license": "MIT",
   "icon": "media/VS-marketplace-CodeQL-icon.png",