Bump koffi from 2.12.0 to 2.15.1 in /extensions/ql-vscode

Bumps [koffi](https://github.com/Koromix/koffi) from 2.12.0 to 2.15.1.
- [Commits](https://github.com/Koromix/koffi/commits)

---
updated-dependencies:
- dependency-name: koffi
  dependency-version: 2.15.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -2076,7 +2076,7 @@
     "@hpcc-js/wasm-graphviz": "^1.18.0",
     "fs-extra": "^11.1.1",
     "js-yaml": "^4.1.1",
-    "koffi": "^2.12.0",
+    "koffi": "^2.15.1",
     "msw": "^2.12.7",
     "nanoid": "^5.0.7",
     "p-queue": "^8.0.1",