chore(examples): update reproduction template (#66301)

## Why?

We get this error when we use `npx` to download the
reproduction-template.

![CleanShot 2024-05-28 at 17 25
40@2x](https://github.com/vercel/next.js/assets/28912696/a2f3c3ce-1a2c-4629-9914-9e88bb9c9632)

Updating the template should fix this error.

examples/reproduction-template/next.config.js

@@ -1,6 +0,0 @@
-/** @type {import("next").NextConfig} */
-const nextConfig = {
-  reactStrictMode: true,
-};
-
-module.exports = nextConfig;

examples/reproduction-template/next.config.mjs

@@ -0,0 +1,8 @@
+/**
+ * @type {import('next').NextConfig}
+ */
+const nextConfig = {
+  reactStrictMode: true,
+};
+
+export default nextConfig;

examples/reproduction-template/package.json

@@ -7,12 +7,13 @@
   },
   "dependencies": {
     "next": "canary",
-    "react": "19.0.0-beta-04b058868c-20240508",
-    "react-dom": "19.0.0-beta-04b058868c-20240508"
+    "react": "19.0.0-rc-6f23540c7d-20240528",
+    "react-dom": "19.0.0-rc-6f23540c7d-20240528"
   },
   "devDependencies": {
-    "@types/node": "20.4.5",
-    "@types/react": "18.2.18",
-    "typescript": "5.1.3"
+    "@types/node": "20.12.12",
+    "@types/react": "18.3.3",
+    "@types/react-dom": "18.3.0",
+    "typescript": "5.3.3"
   }
 }