security/cyrus-sasl2: Update to 2.1.28.

PR: 262133
Relnotes: https://www.cyrusimap.org/sasl/sasl/release-notes/2.1/index.html#new-in-2-1-28
Security: CVE-2019-19906, CVE-2022-24407
(cherry picked from commit d29e6c03261c9cf685efd70824f085f2e422bdcc)