chore(tests): use the newer @vitest/eslint-plugin package (#375)

Author: gagik

eslint.config.js

@@ -3,7 +3,7 @@ import js from "@eslint/js";
 import globals from "globals";
 import tseslint from "typescript-eslint";
 import eslintPluginPrettierRecommended from "eslint-plugin-prettier/recommended";
-import vitestPlugin from "eslint-plugin-vitest";
+import vitestPlugin from "@vitest/eslint-plugin";
 
 const testFiles = ["tests/**/*.test.ts", "tests/**/*.ts"];