libsysdecode: add explicit dependencies on recently changed headers

r349369 removed IP_MIN_MEMBERSHIPS and IPV6_MIN_MEMBERSHIPS, and r349893
removed TCP_RACK_SESS_CWV. libsysdecode lacked dependencies to trigger a
rebuild of tables.h.

Add explicit dependencies as a workaround to address these specific
cases; a holistic solution is still needed.

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