fix: Fix schemas for updating classification on a file and folder (box/box-openapi#423)

[coveralls]

Pull Request Test Coverage Report for Build 9080814912

Details

• 17 of 28 (60.71%) changed or added relevant lines in 5 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.09%) to 91.921%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
box_sdk_gen/managers/legal_hold_policy_assignments.py	2	3	66.67%
box_sdk_gen/schemas/file_versions_on_hold.py	6	11	54.55%
box_sdk_gen/schemas/files_on_hold.py	6	11	54.55%
<!--	Total:	17	28	60.71%	-->

Files with Coverage Reduction	New Missed Lines	%
box_sdk_gen/internal/base_object.py	2	83.93%
<!--	Total:	2		-->

Totals
Change from base Build 9054214120:	-0.09%
Covered Lines:	9955
Relevant Lines:	10830

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💛 - Coveralls