grub2 security update

[2.02-0.87.0.7]

• Fix CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749
  CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 [Orabug: 32530657]
• Fix various coverity issues [Orabug: 32530657]
• Add SBAT metadata to grubx64.efi [Orabug: 32530657]
  [2.02-0.87.0.5]
• Use similar format for menu entry in grub environment block
• config file. [Orabug: 32172943]
  [2.02-0.87.0.3]
• Fix degradation in multiboot2 code [Orabug: 32069510]
  [2.02-0.87.0.1]
• Update signing certificate for efi binaries
• Update upstream references [Orabug: 30138841]
• Restore symlink to grub environment file, that was removed during grub2-efi update
  if grub2 package is also installed on UEFI machines [Orabug: 27345750]
• fix symlink removal scriptlet, to be executed only on removal [Orabug: 19231481]
• Fix comparison in patch for [Orabug: 18504756]
• Remove symlink to grub environment file during uninstall on EFI platforms [Orabug: 19231481]
• replace dynamic EFI boot folder path generation with predefined ‘redhat’ (Alex Burmashev)
• Put ‘with’ in menuentry instead of ‘using’ [Orabug: 18504756]
• Use different titles for UEK and RHCK kernels [Orabug: 18504756]