try bumping sparc

Author: tgross35

ci/linux-sparc64.sh

@@ -5,7 +5,7 @@ set -eux
 mkdir -m 777 /qemu
 cd /qemu
 
-curl --retry 5 -LO https://cdimage.debian.org/cdimage/ports/snapshots/2024-12-24/debian-12.0.0-sparc64-NETINST-1.iso
+curl --retry 5 -LO https://cdimage.debian.org/cdimage/ports/snapshots/2025-08-29/debian-12.0.0-sparc64-NETINST-1.iso
 7z e debian-12.0.0-sparc64-NETINST-1.iso install/initrd.gz
 7z e debian-12.0.0-sparc64-NETINST-1.iso install/vmlinux
 mv vmlinux kernel