fix: BI-7173 fix types in source listing RQE schema (fa3123b97)

Author: KonstantAnxiety

lib/dl_core/dl_core/connection_executors/qe_serializer/schemas_common.py

@@ -188,8 +188,8 @@ def to_object(self, data: dict[str, Any]) -> Any:
 
 class PageIdentSchema(BaseQEAPISchema):
     search_text = fields.String(allow_none=True)
-    limit = fields.String(allow_none=True)
-    offset = fields.String(allow_none=True)
+    limit = fields.Integer(allow_none=True)
+    offset = fields.Integer(allow_none=True)
 
     def to_object(self, data: dict[str, Any]) -> PageIdent:
         return PageIdent(**data)