fix: upgrade Next.js and Node LTS container

eslint.config.mjs

@@ -0,0 +1,9 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+import nextVitals from "eslint-config-next/core-web-vitals";
+import nextTs from "eslint-config-next/typescript";
+
+export default defineConfig([
+  ...nextVitals,
+  ...nextTs,
+  globalIgnores([".next/**", "out/**", "build/**", "next-env.d.ts"]),
+]);