Skip publishing 2.4.2 and do directly to 2.4.3

[Bart Cerneels]

Hi all,

We've found a rather irritating, troll tickling bug in 2.4.2 that
already has a fix by Sam in review [1].

In addition master only has bugfixes now, no string or ABI changes to
the plugins, so we can go without plugin bump and translation.

I propose we do an immediate freeze, commit Sam's patch tag and
/s/"2.4.2"/"2.4.3"/g on our release announcement, add the fixes and
publish that instead.

Bart

[1] https://git.reviewboard.kde.org/r/102079/