Fix type of SnowflakeCursorBase.__iter__

Author: sfc-gh-bchinn

DESCRIPTION.md

@@ -15,6 +15,7 @@ Source code is also available at: https://github.com/snowflakedb/snowflake-conne
   - Added an option to exclude `botocore` and `boto3` dependencies by setting `SNOWFLAKE_NO_BOTO` environment variable during installation
   - Revert changing exception type in case of token expired scenario for `Oauth` authenticator back to `DatabaseError`
   - Added support for pandas conversion for Day-time and Year-Month Interval types
+* Fixed the return type of iterating over a cursor
 
 - v3.17.4(September 22,2025)
   - Added support for intermediate certificates as roots when they are stored in the trust store

src/snowflake/connector/cursor.py

@@ -1628,7 +1628,7 @@ def reset(self, closing: bool = False) -> None:
         if not self.connection._reuse_results:
             self._result_set = None
 
-    def __iter__(self) -> Iterator[dict] | Iterator[tuple]:
+    def __iter__(self) -> Iterator[FetchRow]:
         """Iteration over the result set."""
         while True:
             _next = self.fetchone()