update node-fetch req

Author: mnot

package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "liquidjs": "^9.16.1",
     "marked": "^4.0.12",
-    "node-fetch": "2.2.0",
+    "node-fetch": "3.1.1",
     "npm": "^6.14.11"
   },
   "scripts": {