Increase exporter wait timeout to 2 hours (#1535)

Author: vbrodsky

labelbox/schema/export_task.py

@@ -631,7 +631,7 @@ def organization(self):
         """Returns the organization of the task."""
         return self._task.organization
 
-    def wait_till_done(self, timeout_seconds: int = 300) -> None:
+    def wait_till_done(self, timeout_seconds: int = 7200) -> None:
         """Waits until the task is done."""
         return self._task.wait_till_done(timeout_seconds)