security/p5-Net-SSLeay: Fix build with libressl3.8

Import patch to disable Policy Tree API with LibreSSL >= 3.8:
https://github.com/openbsd/ports/commit/f6567f938c9bd51bfd99f8426eba6a1590cc6384

Approved by: portmgr (implicit, fix-it)
Obtained from: OpenBSD