chore(package): update standard to version 13.1.0

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
   },
   "devDependencies": {
     "magnet-uri": "^5.1.3",
-    "standard": "*",
+    "standard": ">=13.1.0",
     "tape": "^4.0.0",
     "webtorrent-fixtures": "^1.3.0",
     "wrtc": "^0.4.1"