Hello,
I extracted Helmut's changes for this issue from the debdiff he posted
in an earlier message, and proposed a merge request on salsa.
https://salsa.debian.org/debian/cyrus-sasl2/merge_requests/3
as a git-format-patch(1) patch:
https://salsa.debian.org/debian/cyrus-sasl2/merge_requests/3.patch
I have built it and verified that the Depends line and library
dependencies are corrected, and that it is installable. I have not
actually tested the module's functionality.
I agree with Helmut that this looks suitable for a stretch update. I
would be willing to drive that process if the maintainers agree but lack
time.