fix: add missing @types/node dep

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

Author: skjnldsv

package-lock.json

@@ -32,6 +32,7 @@
     "@babel/preset-env": "7.23.2",
     "@babel/preset-typescript": "7.23.2",
     "@nextcloud/browserslist-config": "^3.0.0",
+    "@types/node": "^20.8.6",
     "babel-jest": "^29.2.1",
     "jest": "^29.2.1",
     "typedoc": "^0.25.0",