Bump root partition size for KDE live

The aarch64 KDE live image build is failing due to lack of space:
https://kojipkgs.fedoraproject.org//work/tasks/6017/105476017/livemedia-out.log
so let's bump it.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

fedora-live-kde.ks

@@ -11,7 +11,7 @@
 %include fedora-live-minimization.ks
 
 # DVD payload
-part / --size=8000
+part / --size=9000
 
 %post
 %end