Cinnamon: bump root size to try and fix build

Cinnamon image build is failing at the moment, and I see this in
the logs:

2025-07-22T15:44:31+0000 [260] INFO RPM callback start %posttrans scriptlet "kernel-core-0:6.16.0-0.rc7.58.fc43.x86_64"
2025-07-22T15:44:31+0000 [260] INFO [scriptlet] grub2-probe: error: ../grub-core/kern/fs.c:123:unknown filesystem.
2025-07-22T15:44:38+0000 [260] INFO [scriptlet] dracut[W]: Running in hostonly mode in a container!
2025-07-22T15:44:38+0000 [260] INFO [scriptlet] dracut[E]: No '/dev/log' or 'logger' included for syslog logging
2025-07-22T15:45:09+0000 [260] INFO [scriptlet] dracut[E]: No '/dev/log' or 'logger' included for syslog logging
2025-07-22T15:46:20+0000 [260] INFO [scriptlet] cp:
2025-07-22T15:46:20+0000 [260] INFO [scriptlet] error copying '/var/tmp/dracut.dGGDh1v/initramfs.img' to '/boot/initramfs-0-rescue-bc1937eee2a84a8bb3c665a062c4566f.img': No space left on device
2025-07-22T15:46:20+0000 [260] INFO [scriptlet] dracut[F]: Creation of /boot/initramfs-0-rescue-bc1937eee2a84a8bb3c665a062c4566f.img failed
2025-07-22T15:46:20+0000 [260] INFO [scriptlet] /usr/lib/kernel/install.d/51-dracut-rescue.install failed with exit status 1.
2025-07-22T15:46:20+0000 [260] WARNING [rpm] %posttrans(kernel-core-6.16.0-0.rc7.58.fc43.x86_64) scriptlet failed, exit status 1
2025-07-22T15:46:20+0000 [260] INFO RPM callback stop %posttrans scriptlet "kernel-core-0:6.16.0-0.rc7.58.fc43.x86_64" return code 1

I *think* that's probably the issue. So let's try bumping the
root fs size and see if it helps.

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

fedora-live-cinnamon.ks

@@ -9,7 +9,7 @@
 %include fedora-live-base.ks
 %include fedora-cinnamon-common.ks
 
-part / --size=8192
+part / --size=9216
 
 %post
 # cinnamon configuration