Bump applicationinsights from 2.9.2 to 2.9.4 in /extensions/ql-vscode (#3430)

Bumps [applicationinsights](https://github.com/microsoft/ApplicationInsights-node.js) from 2.9.2 to 2.9.4.
- [Release notes](https://github.com/microsoft/ApplicationInsights-node.js/releases)
- [Commits](microsoft/ApplicationInsights-node.js@2.9.2...2.9.4)

---
updated-dependencies:
- dependency-name: applicationinsights
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -2026,7 +2026,7 @@
     "@vscode/test-electron": "^2.2.0",
     "@vscode/vsce": "^2.19.0",
     "ansi-colors": "^4.1.1",
-    "applicationinsights": "^2.9.2",
+    "applicationinsights": "^2.9.4",
     "cosmiconfig": "^9.0.0",
     "cross-env": "^7.0.3",
     "css-loader": "^6.10.0",