chore(deps): update dependency cucumber to v6

Author: renovate-bot

package.json

@@ -43,10 +43,10 @@
     "cucumber-html-reporter": "^3.0.4"
   },
   "devDependencies": {
-    "@types/cucumber": "3.2.1",
+    "@types/cucumber": "6.0.0",
     "@types/node": "8.5.7",
     "coveralls": "3.0.0",
-    "cucumber": "3.2.1",
+    "cucumber": "6.0.4",
     "nyc": "11.4.1",
     "semantic-release": "12.1.0",
     "ts-node": "4.1.0",