refactor: upgrade to Zod 4

also updates Hono Zod related deps

src/controllers/auth/anilist/index.ts

@@ -20,8 +20,8 @@ const UserSchema = z.object({
   }),
   statistics: z.object({
     minutesWatched: z.number().openapi({ type: "integer", format: "int64" }),
-    episodesWatched: z.number().int(),
-    count: z.number().int(),
+    episodesWatched: z.int(),
+    count: z.int(),
     meanScore: z.number().openapi({ type: "number", format: "float" }),
   }),
 });