systemd was updated to fix some bugs:

- fix disabled event source handling (bsc#951663)

- Drop the support of the new property "Delegate". Several performance
regressions have been reported since it was introduced, see
bsc#953241 for example. This feature was originally introduced when
backporting a fix for bsc#932284, however this was not mandatory.
- Modernize patch tty-ask-password-agent-on-console.patch (maybe
related to bsc#949739)
- rootsymlink_generator: create /run/udev if it doesnt exists so we
wont fail when starting (bsc#945282).
- rules: persistent devices names for NVMe devices (bsc#944132).
- Allow systemd-sysv-convert to do its job even if one of the sysvinit
script is not found (bsc#954336)