chore: add a missing dep

Author: yomotsu

package-lock.json

@@ -17,6 +17,7 @@
     "@types/three": "^0.174.0",
     "@typescript-eslint/eslint-plugin": "^8.26.1",
     "@typescript-eslint/parser": "^8.26.1",
+    "conventional-changelog-conventionalcommits": "^9.0.0",
     "downlevel-dts": "^0.11.0",
     "eslint": "^9.22.0",
     "globals": "^16.0.0",