chore(deps): update dependency eslint to v5.15.0

Author: renovate-bot

package-lock.json

@@ -67,7 +67,7 @@
     "xregexp": "4.2.4"
   },
   "devDependencies": {
-    "eslint": "5.14.1",
+    "eslint": "5.15.0",
     "eslint-config-airbnb-base": "13.1.0",
     "eslint-plugin-import": "2.16.0",
     "jasmine-fix": "1.3.1"