Comment # 2 on bug 1107615 from Marius Tomaschewski

Removing the dependencies / triggers has been rejected for SLE-15-SP4,
but it's fixed already for a while (independently of this bug report
aka not mentioned in the changes):

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Mon Apr 26 11:32:24 UTC 2021 - Fabian Vogt <fvogt@suse.com>

- spec: Drop hard dependency on /sbin/ifup
...

and finally in sysconfig-0.90.0 version, see:
https://build.opensuse.org/request/show/985326