v0.48

This combines multiple releases in one because the automatic github action releases didn't work as planned.

Changes:

0.48     Mon Aug  3 16:00:52 CEST 2026
         - fix showing 0.01 as version when building release builds

0.47     Mon Aug  3 14:24:53 CEST 2026
         - fix github release builds action

0.46     Mon Aug  3 13:55:25 CEST 2026
         - check_http: support additional header
         - check_http: add limits to buffer size and wait time
         - check_mailq: fix always showing empty result
         - check_os_updates: fix checking updates as non-root user
         - check_drivesize: fix drive specific thresholds
         - fix flags parsing on windows