MFH: r552175 r553388 r553389

Now builds on FreeBSD-12 powerpc64. As a test, also enable on FreeBSD-13 powerpc64.

Approved by: portmgr (tier-2 blanket)

misc/xgboost: Update 1.2.0 -> 1.2.1

misc/py-xgboost: Update 1.2.0 -> 1.2.1

PR: 247408

Approved by: ports-secteam (fluffy)