Merge pull request #1238 from github/dependabot/npm_and_yarn/extensions/ql-vscode/through2-4.0.2

Bump through2 from 3.0.2 to 4.0.2 in /extensions/ql-vscode

Author: aeisenberg

extensions/ql-vscode/package-lock.json

@@ -1201,7 +1201,7 @@
     "sinon": "~9.0.0",
     "sinon-chai": "~3.5.0",
     "style-loader": "~0.23.1",
-    "through2": "^3.0.1",
+    "through2": "^4.0.2",
     "ts-loader": "^8.1.0",
     "ts-node": "^8.3.0",
     "ts-protoc-gen": "^0.9.0",