x11/sfwbar: Update 1.0_beta15 → 1.0_beta16, fix CPU temperature in FreeBSD

Changelog:
https://github.com/LBCrion/sfwbar/releases/tag/v1.0_beta16

Add patches form upstream to fix bug: cpu-temp.widget shows wrong
temperature in FreeBSD

PR: 284338
Approved by: Tino Engel <tino.engel@mail.de> (maintainer)