fix compilation issue

Author: Ivansete-status

waku/rest_api/endpoint/store/handlers.nim

@@ -131,11 +131,11 @@ proc createStoreQuery(
 
   # Enforce default value of page_size to 20
   if parsedPagedSize.isNone():
-    parsedPagedSize = some(20)
+    parsedPagedSize = some(20.uint64)
 
   # Enforce max value of page_size to 100
   if parsedPagedSize.get() > 100:
-    parsedPagedSize = some(100)
+    parsedPagedSize = some(100.uint64)
 
   return ok(
     StoreQueryRequest(