DEV: Bump eslint-config-discourse and correct violations

package.json

@@ -5,6 +5,6 @@
   "author": "Discourse",
   "license": "MIT",
   "devDependencies": {
-    "eslint-config-discourse": "^1.1.8"
+    "eslint-config-discourse": "^2.0.0"
   }
 }

test/javascripts/acceptance/docs-test.js.es6

@@ -5,6 +5,7 @@ import {
 } from "discourse/tests/helpers/qunit-helpers";
 import { test } from "qunit";
 import docsFixtures from "../fixtures/docs";
+import { click, visit } from "@ember/test-helpers";
 
 acceptance("Docs", function (needs) {
   needs.user();