k18n 5.45 update

[Jonathan Riddell]

Could we get a .1 update to k18n to include this fix?

https://cgit.kde.org/ki18n.git/commit/?id=9c32bdab29b345976eee3b9c1c4bebd76cdcdde2
https://phabricator.kde.org/D12216

It is causing issue with some packager of plasma-workspace 5.12.5

Jonathan