chore(package): update standard to version 12.0.0 (#27)

Author: greenkeeper[bot]

package.json

@@ -10,7 +10,7 @@
   "devDependencies": {
     "form-data": "^2.3.2",
     "pre-commit": "^1.2.2",
-    "standard": "^11.0.0",
+    "standard": "^12.0.0",
     "tap": "^12.0.0"
   },
   "scripts": {