fix post version pagination

e621.py

@@ -173,7 +173,11 @@ class E621:
         return (await self.get_posts(f'id:{post_id}'))[0]
 
     async def get_post_versions(self, start_id=0, page=1, limit=320) -> List[E621PostVersion]:
-        r = (await self.client.get('/post_versions.json', params={'search[start_id]': start_id, 'limit': limit})).json()
+        r = (await self.client.get('/post_versions.json', params={
+            'search[start_id]': start_id,
+            'limit': limit,
+            'page': page,
+        })).json()
         if 'success' in r:
             return []
         return [E621PostVersion.from_dict(p) for p in r]