git: 1a79b20663ca..8f7d3ef26dec - vendor/krb5 - vendor branch updated

[Cy Schubert]

The branch vendor/krb5 has been updated by cy:

URL: https://cgit.FreeBSD.org/src/log/?id=1a79b20663ca..8f7d3ef26dec

8f7d3ef26dec krb5: Import MIT 1.21.3