Update dependency eslint-plugin-ghost to v0.6.0

Author: renovate[bot]

package.json

@@ -69,7 +69,7 @@
   ],
   "devDependencies": {
     "eslint": "6.8.0",
-    "eslint-plugin-ghost": "0.2.0",
+    "eslint-plugin-ghost": "0.6.0",
     "mocha": "7.2.0",
     "nyc": "15.1.0",
     "rimraf": "3.0.2",