upgrade to astro 2.0

src/content/config.ts

@@ -0,0 +1,12 @@
+import { z, defineCollection } from "astro:content";
+
+const blogCollection = defineCollection({
+  schema: z.object({
+    title: z.string(),
+    pubDate: z.date(),
+  }),
+});
+
+export const collections = {
+  blog: blogCollection,
+};