CLSA-2025-1744222859 grub2: Fix of 5 CVEs

CVE-2025-0624: net: Out-of-bounds write in grubnetsearchconfigfile - CVE-2025-0690: read: Integer overflow may lead to out-of-bounds write - CVE-2025-1118: commands/dump: The dump command is not in lockdown when secure boot is enabled - CVE-2025-0678: squash4: Integer overflow may lead to heap...