latest bnb no longer has optim_args attribute on optimizer #5328

Job	Run time
run-tests (latest, test_prod)	1m 39s
run-tests (latest, test_core)	2m 52s
run-tests (latest, test_cli)	2m 29s
run-tests (latest, test_big_modeling)	3m 54s
run-tests (latest, test_deepspeed)	2m 33s
run-tests (latest, test_fsdp)	2m 26s
run-tests (latest, test_example_differences)	2m 23s
run-tests (latest, test_checkpoint_step)	4m 7s
run-tests (latest, test_checkpoint_epoch)	5m 23s
run-tests (latest, test_rest)	11m 23s
run-tests (minimum, test_prod)	3m 12s
run-tests (minimum, test_core)	6m 51s
run-tests (minimum, test_cli)	3m 48s
run-tests (minimum, test_big_modeling)	6m 26s
run-tests (minimum, test_deepspeed)	6m 16s
run-tests (minimum, test_fsdp)	6m 18s
run-tests (minimum, test_example_differences)	4m 40s
run-tests (minimum, test_checkpoint_step)	4m 58s
run-tests (minimum, test_checkpoint_epoch)	4m 32s
run-tests (minimum, test_rest)	13m 7s
	1h 39m 17s

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