Bump version to v1.7.4 (#1676)

Co-authored-by: angelapwen <[email protected]>

Author: github-actions[bot]

extensions/ql-vscode/CHANGELOG.md

@@ -1,5 +1,7 @@
 # CodeQL for Visual Studio Code: Changelog
 
+## [UNRELEASED]
+
 ## 1.7.3 - 28 October 2022
 
 - Fix a bug where databases may be lost if VS Code is restarted while the extension is being started up. [#1638](https://github.com/github/vscode-codeql/pull/1638)

extensions/ql-vscode/package-lock.json

@@ -4,7 +4,7 @@
   "description": "CodeQL for Visual Studio Code",
   "author": "GitHub",
   "private": true,
-  "version": "1.7.3",
+  "version": "1.7.4",
   "publisher": "GitHub",
   "license": "MIT",
   "icon": "media/VS-marketplace-CodeQL-icon.png",