Update stubs/PyMySQL/pymysql/cursors.pyi

Co-authored-by: Brian Schubert <brianm.schubert@gmail.com>

Author: Spider84pr

stubs/PyMySQL/pymysql/cursors.pyi

@@ -54,4 +54,4 @@ class DictCursor(DictCursorMixin, Cursor): ...  # type: ignore[misc]
 
 class SSDictCursor(DictCursorMixin, SSCursor):  # type: ignore[misc]
     def fetchall_unbuffered(self) -> Iterator[dict[str, Any]]: ...  # type: ignore[override]
-    def read_next(self) -> dict[str, Any] | None: ...
+    def read_next(self) -> dict[str, Any] | None: ...  # type: ignore[override]