Bump eslint-plugin-ember from 8.5.2 to 8.6.0

Bumps [eslint-plugin-ember](https://github.com/ember-cli/eslint-plugin-ember) from 8.5.2 to 8.6.0.
- [Release notes](https://github.com/ember-cli/eslint-plugin-ember/releases)
- [Changelog](https://github.com/ember-cli/eslint-plugin-ember/blob/master/CHANGELOG.md)
- [Commits](ember-cli/eslint-plugin-ember@v8.5.2...v8.6.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -95,7 +95,7 @@
     "ember-window-mock": "^0.6.0",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.11.0",
-    "eslint-plugin-ember": "^8.5.2",
+    "eslint-plugin-ember": "^8.6.0",
     "eslint-plugin-import-helpers": "^1.0.2",
     "eslint-plugin-prettier": "^3.1.3",
     "loader.js": "^4.7.0",