Bump @typescript-eslint/parser in /extensions/ql-vscode (#3392)

Bumps [@typescript-eslint/parser](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser) from 6.16.0 to 6.21.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/parser/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v6.21.0/packages/parser)

---
updated-dependencies:
- dependency-name: "@typescript-eslint/parser"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

@@ -2022,7 +2022,7 @@
     "@types/vscode": "^1.82.0",
     "@types/yauzl": "^2.10.3",
     "@typescript-eslint/eslint-plugin": "^6.19.0",
-    "@typescript-eslint/parser": "^6.16.0",
+    "@typescript-eslint/parser": "^6.21.0",
     "@vscode/test-electron": "^2.2.0",
     "@vscode/vsce": "^2.19.0",
     "ansi-colors": "^4.1.1",