chore: add missing @types/node

Author: bcoe

package.json

@@ -53,6 +53,7 @@
     "wrap-ansi": "^7.0.0"
   },
   "devDependencies": {
+    "@types/node": "^14.0.27",
     "@typescript-eslint/eslint-plugin": "^3.8.0",
     "@typescript-eslint/parser": "^3.8.0",
     "@wessberg/rollup-plugin-ts": "^1.3.2",