Bump ts-loader from 8.1.0 to 9.4.2 in /extensions/ql-vscode

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 8.1.0 to 9.4.2.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/main/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v8.1.0...v9.4.2)

---
updated-dependencies:
- dependency-name: ts-loader
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -1556,7 +1556,7 @@
     "through2": "^4.0.2",
     "ts-jest": "^29.0.1",
     "ts-json-schema-generator": "^1.1.2",
-    "ts-loader": "^8.1.0",
+    "ts-loader": "^9.4.2",
     "ts-node": "^10.7.0",
     "ts-protoc-gen": "^0.9.0",
     "typescript": "^4.5.5",