Moto 5.0.12 breaks amazon provider's RDS tests

[potiuk]

Body

The just released moto 5.0.12 breaks tests for AWS RDS

https://github.com/apache/airflow/actions/runs/10230423335/job/28305276935#step:7:919

The way to reproduce it:

• Enter breeze breeze (you get latest constraints dependencies there)
• Run the test pytest tests/providers/amazon/aws/sensors/test_rds.py::TestRdsExportTaskExistenceSensor::test_export_task_poke_false
• It succeeds
• Upgrade moto to latest version pip install --upgrade moto:

Installing collected packages: moto
  Attempting uninstall: moto
    Found existing installation: moto 5.0.11
    Uninstalling moto-5.0.11:
      Successfully uninstalled moto-5.0.11
Successfully installed moto-5.0.12

• run the same test again

Fails with

  raise error_class(parsed_response, operation_name)
E           botocore.errorfactory.ExportTaskNotFoundFault: An error occurred (ExportTaskNotFound) when calling the DescribeExportTasks operation: Cannot cancel export task because a task with the identifier my-db-instance-snap-export is not exist.

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[vikramaditya91]

The reason for the failure is
getmoto/moto#7861

specifically the

+            "ExportTaskNotFound",
-            "ExportTaskNotFoundFault",

in the class ExportTaskNotFoundError