fix(npm): potential security vulnerability

Refs websockets/ws@c4fe466

package.json

@@ -48,7 +48,8 @@
     "node": ">=8.0.0"
   },
   "resolutions": {
-    "lodash": "4.17.13"
+    "lodash": "4.17.13",
+    "ws": "3.3.1"
   },
   "files": [
     "dist",

yarn.lock

@@ -301,6 +301,11 @@ async-each@^1.0.0:
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.3.tgz#b727dbf87d7651602f06f4d4ac387f47d91b0cbf"
   integrity sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==
 
+async-limiter@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
+  integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -2619,11 +2624,6 @@ optionator@^0.8.1:
     type-check "~0.3.2"
     wordwrap "~1.0.0"
 
-options@>=0.0.5:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
-  integrity sha1-7CLTEoBrtT5zF3Pnza788cZDEo8=
-
 ora@^1.2.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ora/-/ora-1.4.0.tgz#884458215b3a5d4097592285f93321bb7a79e2e5"
@@ -3653,10 +3653,10 @@ uglify-js@3.0.28:
     commander "~2.11.0"
     source-map "~0.5.1"
 
-ultron@1.0.x:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.0.2.tgz#ace116ab557cd197386a4e88f4685378c8b2e4fa"
-  integrity sha1-rOEWq1V80Zc4ak6I9GhTeMiy5Po=
+ultron@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.1.tgz#9fe1536a10a664a65266a1e3ccf85fd36302bc9c"
+  integrity sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og==
 
 unbzip2-stream@^1.0.9:
   version "1.3.3"
@@ -3819,13 +3819,14 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
-ws@^1.1.1:
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.5.tgz#cbd9e6e75e09fc5d2c90015f21f0c40875e0dd51"
-  integrity sha512-o3KqipXNUdS7wpQzBHSe180lBGO60SoK0yVo3CYJgb2MkobuWuBX6dhkYP5ORCLd55y+SaflMOV5fqAB53ux4w==
+ws@3.3.1, ws@^1.1.1:
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-3.3.1.tgz#d97e34dee06a1190c61ac1e95f43cb60b78cf939"
+  integrity sha512-8A/uRMnQy8KCQsmep1m7Bk+z/+LIkeF7w+TDMLtX1iZm5Hq9HsUDmgFGaW1ACW5Cj0b2Qo7wCvRhYN2ErUVp/A==
   dependencies:
-    options ">=0.0.5"
-    ultron "1.0.x"
+    async-limiter "~1.0.0"
+    safe-buffer "~5.1.0"
+    ultron "~1.1.0"
 
 xtend@^4.0.0:
   version "4.0.2"