cksum: Move --ckeck's deps to clap #16220

Job	Run time
Style/spelling (ubuntu-latest, feat_os_unix)	14s
Style/toml	12s
Style/format (ubuntu-latest, feat_os_unix)	18s
Pre-commit hooks	31s
Style/Python	8s
Style/lint (ubuntu-latest, all, true)	2m 13s
Style/lint (macos-latest, feat_os_macos)	1m 42s
Style/lint (windows-latest, feat_os_windows)	3m 28s
	8m 46s

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