chore(deps): bump koffi from 2.15.2 to 2.15.4

Bumps [koffi](https://github.com/Koromix/koffi) from 2.15.2 to 2.15.4.
- [Commits](https://github.com/Koromix/koffi/commits)

---
updated-dependencies:
- dependency-name: koffi
  dependency-version: 2.15.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -33,7 +33,7 @@
     "html2canvas": "^1.4.1",
     "jieba-wasm": "^2.2.0",
     "jszip": "^3.10.1",
-    "koffi": "^2.9.0",
+    "koffi": "^2.15.4",
     "lucide-react": "^1.7.0",
     "react": "^19.2.3",
     "react-dom": "^19.2.3",