Merge branch 'security-2770-verify-bundle-import-files-11-6' into 'security-11-6'
[11.6] Validate bundle files before unpacking them See merge request gitlab/gitlabhq!2774 (cherry picked from commit ad73bf817253ec4fc3fae8c7fb60898f11922218) 5f2fe991 Validate bundle files before unpacking them