chore(package): update @commitlint/cli to version 7.1.0

Closes #21

Author: greenkeeper[bot]

package.json

@@ -23,7 +23,7 @@
     "semantic-release": "semantic-release"
   },
   "devDependencies": {
-    "@commitlint/cli": "^6.0.2",
+    "@commitlint/cli": "^7.1.0",
     "@commitlint/config-conventional": "^6.0.4",
     "@semantic-release/changelog": "^2.0.1",
     "@semantic-release/git": "^4.0.1",