security/p5-Authen-SASL: Use upstream version scheme

which brings the port version in line with the upstream and
make security assessments easier WRT versioning.

See https://metacpan.org/release/EHUELS/Authen-SASL-2.1900/source/Makefile.PL#L29
See https://metacpan.org/release/EHUELS/Authen-SASL-2.1900/source/Changes#L2
See https://vuxml.freebsd.org/freebsd/defe9a20-781e-11f0-97c4-40b034429ecf.html
which added the vulnerability CVE-2025-40918 and correctly marked 2.1900
fixed, but we ship 2.19 instead because we forge our own version scheme.

(cherry picked from commit 192c4d399bd4ce6eb7c398552629e6256f29e867)

PR: 288883