chore(deps): update devdependency eslint to v7

Author: renovate-bot

package.json

@@ -24,7 +24,7 @@
   "devDependencies": {
     "arkit": "dyatko/arkit#master",
     "babel-eslint": "^7.1.1",
-    "eslint": "^3.13.1",
+    "eslint": "^7.18.0",
     "eslint-config-standard": "^6.2.1",
     "eslint-plugin-html": "^1.7.0",
     "eslint-plugin-promise": "^3.4.0",