Adjust date-fns parsing to limit alternate date formats

Not a fix for the GMT+0/UTC date output on Vercel builds

src/content/config.ts

@@ -8,7 +8,7 @@ const blogCollection = defineCollection({
     description: z.string(),
     pubDate: z.string().transform((date) => 
       z.date().parse(
-        parse(date, 'yyyy-MM-dd HH:mm:ss XXXX', new Date())
+        parse(date, 'yyyy-MM-dd HH:mm:ss XX', new Date())
       )
     ),
     tags: z.array(z.string()),