feat: custody bulk withdrawal support for sol #1519

Job	Run time
Generate merge base API spec	8m 26s
Generate head API spec	1m 5s
Check specs identical	-1s
Check breaking changes	0s
API Spec Check	3s
Generate vacuum reports for API spec	0s
Linter Override	0s
Generate head API spec	6m 46s
Generate merge base API spec	8m 26s
Check specs identical	8s
Check breaking changes	0s
Generate vacuum reports for API spec	0s
API Spec Check	2s
Linter Override	0s
	24m 55s

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