chore: eslint - use es2020 for parsing

.eslintrc

@@ -5,7 +5,7 @@
 		"es6": true
 	},
 	"parserOptions": {
-		"ecmaVersion": 9,
+		"ecmaVersion": 11,
 		"sourceType": "module"
 	},
 	"extends": "eslint:recommended",