net/self-service-password: Update 1.8.0 => 1.8.1
Changelog:
https://github.com/ltb-project/self-service-password/releases/tag/v1.8.1
PR: 296125
MFH: 2026Q2
Approved by: osa, vvd (Mentors, implicit)
(cherry picked from commit 14d8b2e3b1c104690d95ded43f71c0930ac69ac5)