chore(package): update @commitlint/cli to version 7.3.1

Closes #24

Author: greenkeeper[bot]

package.json

@@ -43,7 +43,7 @@
     "react-dom": "16.3.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "6.1.3",
+    "@commitlint/cli": "7.3.1",
     "@commitlint/config-conventional": "6.1.3",
     "@storybook/react": "3.4.0",
     "babel-cli": "6.26.0",