CI: Add Debian 13 to the FULL_OS runner list

This commit adds Debian 13 alias Trixie to the checked operating
systems. The image needs to be run with UEFI support.

Current Debian version overview:
- Debian 11 (Bullseye) -> "oldoldstable"
- Debian 12 (Bookworm) -> "oldstable"
- Debian 13 (Trixie) -> new "stable"

The CI will be run on Debian 12 and Debian 13 now.
Debian 11 is kept, but won't be used automatically.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #17648

.github/workflows/scripts/qemu-5-setup.sh

@@ -12,16 +12,26 @@ source /var/tmp/env.txt
 # wait for poweroff to succeed
 PID=$(pidof /usr/bin/qemu-system-x86_64)
 tail --pid=$PID -f /dev/null
-sudo virsh undefine openzfs
+sudo virsh undefine --nvram openzfs
 
 # cpu pinning
 CPUSET=("0,1" "2,3")
 
+# additional options for virt-install
+OPTS[0]=""
+OPTS[1]=""
+
 case "$OS" in
   freebsd*)
     # FreeBSD needs only 6GiB
     RAM=6
     ;;
+  debian13)
+    RAM=8
+    # Boot Debian 13 with uefi=on and secureboot=off (ZFS Kernel Module not signed)
+    OPTS[0]="--boot"
+    OPTS[1]="firmware=efi,firmware.feature0.name=secure-boot,firmware.feature0.enabled=no"
+    ;;
   *)
     # Linux needs more memory, but can be optimized to share it via KSM
     RAM=8
@@ -79,7 +89,7 @@ EOF
     --network bridge=virbr0,model=$NIC,mac="52:54:00:83:79:0$i" \
     --disk $DISK-system,bus=virtio,cache=none,format=$FORMAT,driver.discard=unmap \
     --disk $DISK-tests,bus=virtio,cache=none,format=$FORMAT,driver.discard=unmap \
-    --import --noautoconsole >/dev/null
+    --import --noautoconsole ${OPTS[0]} ${OPTS[1]}
 done
 
 # generate some memory stats