Fix RedshiftResumeClusterOperator deferrable implementation

[phanikumv]

This PR fixes the bug on RedshiftResumeClusterOperator implementation when deferrable flag is set to True
Related to #30090

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[phanikumv]

Logs showing successful task execution

[2023-03-30, 16:26:42 UTC] {taskinstance.py:1326} INFO - Resuming after deferral [2023-03-30, 16:26:42 UTC] {taskinstance.py:1347} INFO - Executing <Task(RedshiftResumeClusterOperator): resume_redshift_cluster> on 2023-03-30 16:18:42.456898+00:00 [2023-03-30, 16:26:42 UTC] {standard_task_runner.py:56} INFO - Started process 1542 to run task [2023-03-30, 16:26:42 UTC] {standard_task_runner.py:83} INFO - Running: ['airflow', 'tasks', 'run', 'example_async_redshift_cluster_management', 'resume_redshift_cluster', 'manual__2023-03-30T16:18:42.456898+00:00', '--job-id', '37', '--raw', '--subdir', 'DAGS_FOLDER/example_redshift_cluster_management.py', '--cfg-path', '/tmp/tmppxlt9doz'] [2023-03-30, 16:26:42 UTC] {standard_task_runner.py:84} INFO - Job 37: Subtask resume_redshift_cluster [2023-03-30, 16:26:42 UTC] {task_command.py:407} INFO - Running <TaskInstance: example_async_redshift_cluster_management.resume_redshift_cluster manual__2023-03-30T16:18:42.456898+00:00 [running]> on host f164302965b9 [2023-03-30, 16:26:43 UTC] {redshift_cluster.py:472} INFO - resume_redshift_cluster completed successfully. [2023-03-30, 16:26:43 UTC] {redshift_cluster.py:473} INFO - Resumed cluster successfully

[phanikumv]

@syedahsn could you please review this PR

[potiuk]

Yeah. a bit too late @phanikumv -> the next release. BTW. For the future - when we prepare for release we announce it it's a time to advocate for the important ones to be merged :D

https://apache-airflow.slack.com/archives/CCPRP7943/p1679926872390929