Update .eslintrc.json

Signed-off-by: Sora Morimoto <[email protected]>

Author: smorimoto

.eslintrc.json

@@ -1,16 +1,15 @@
 {
   "env": { "node": true },
   "parser": "@typescript-eslint/parser",
-  "parserOptions": { "ecmaVersion": 2020, "sourceType": "module" },
+  "parserOptions": { "ecmaVersion": 2021, "sourceType": "module" },
   "extends": [
     "eslint:recommended",
     "plugin:@typescript-eslint/eslint-recommended",
     "plugin:@typescript-eslint/recommended",
     "plugin:import/errors",
     "plugin:import/typescript",
     "plugin:import/warnings",
-    "plugin:prettier/recommended",
-    "prettier/@typescript-eslint"
+    "plugin:prettier/recommended"
   ],
   "plugins": ["@typescript-eslint", "simple-import-sort"],
   "settings": {