Update yargs to the latest version 🚀 (#72)

* chore(package): update yargs to version 11.0.0

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeper[bot]

package-lock.json

@@ -105,7 +105,7 @@
     "rimraf": "^2.6.1",
     "style-loader": "^0.19.0",
     "webpack": "^3.5.6",
-    "yargs": "10.1.1"
+    "yargs": "11.0.0"
   },
   "repository": {
     "type": "git",

package.json

@@ -6903,7 +6903,30 @@ yargs-parser@^8.1.0:
   dependencies:
     camelcase "^4.1.0"
 
-yargs@10.1.1, yargs@^10.0.3:
+yargs-parser@^9.0.2:
+  version "9.0.2"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-9.0.2.tgz#9ccf6a43460fe4ed40a9bb68f48d43b8a68cc077"
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs@11.0.0:
+  version "11.0.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.0.0.tgz#c052931006c5eee74610e5fc0354bedfd08a201b"
+  dependencies:
+    cliui "^4.0.0"
+    decamelize "^1.1.1"
+    find-up "^2.1.0"
+    get-caller-file "^1.0.1"
+    os-locale "^2.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^9.0.2"
+
+yargs@^10.0.3:
   version "10.1.1"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.1.tgz#5fe1ea306985a099b33492001fa19a1e61efe285"
   dependencies: