chore(package): update @commitlint/cli to version 7.0.0

Author: greenkeeper[bot]

package.json

@@ -43,7 +43,7 @@
 		"wordpress"
 	],
 	"devDependencies": {
-		"@commitlint/cli": "~6.1.3",
+		"@commitlint/cli": "~7.0.0",
 		"@commitlint/config-conventional": "~6.1.3",
 		"eslint": "~4.19.0",
 		"eslint-plugin-wordpress": "git://github.com/WordPress-Coding-Standards/eslint-plugin-wordpress.git#552af1454d175e15f6d25aadc2ccde30a1922d4f",