Update lockfile (OpenZeppelin#3193)

Author: frangio

.eslintrc

@@ -1,11 +1,9 @@
 {
   "extends" : [
-    "standard",
-    "plugin:promise/recommended",
+    "standard"
   ],
   "plugins": [
-    "mocha-no-only",
-    "promise",
+    "mocha"
   ],
   "env": {
     "browser" : true,
@@ -53,7 +51,7 @@
     "semi": ["error", "always"],
     "space-before-function-paren": ["error", "always"],
 
-    "mocha-no-only/mocha-no-only": ["error"],
+    "mocha/no-exclusive-tests": ["error"],
 
     "promise/always-return": "off",
     "promise/avoid-new": "off",