With heimdal, you'll get undefined symbol errors like this one:
/usr/pkg/lib/python3.8/site-packages/kerberos.so: Undefined PLT symbol "krb5_free_keytab_entry_contents"
Bump PKGREVISION.
This Python package is a high-level wrapper for Kerberos (GSSAPI)
operations. The goal is to avoid having to build a module that
wraps the entire Kerberos.framework, and instead offer a limited
set of functions that do what is needed for client/server Kerberos
authentication based on RFC 4559.
