KDE: Update KDE Plasma Desktop to 5.27.0

Today is 💖 Free Software Day and what better way to celebrate than with
a brand new version of Plasma!  The KDE team expressing their ❤️ for Free
Software

Plasma 5.27 brings exciting new improvements to your desktop, and the
first thing you'll notice when firing up Plasma is our new Konqi-powered
wizard which will guide you through setting up the desktop.

Other big new features include a window tiling system, a more stylish
app theme, cleaner and more usable tools, and widgets that give you more
control over your machine.

Additionally, Plasma 5.27 is a Long Term Support version with tons of
stability work and bugfixes, so you can feel the warm and stable 💘 from
the KDE community forever... Or at least until the next LTS rolls around
in 2024!

Announcement: https://kde.org/announcements/plasma/5/5.27.0/