SUSE-SU-2022:2035-1 Security update for grub2

This update for grub2 fixes the following issues: This update provides security fixes and hardenings for Boothole 3 / Boothole 2022 bsc1198581 - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap bsc1191184 - CVE-2021-3696: Fixed that a crafted PNG...