When you’re trying to upgrade VMWare ESXi from 6. or 6.5 to 6.7.
Via vCenter update manager or ILO console you may notice the
Error similar: Missing_dependency vibs eror like
Qlogic_bootbank_scsi, or Mellanox bootbank_net.

I just upgraded the firmware version and I have checked my boot mode It’s Legacy BIOS, then I changed to UEFI. After reboot the Serve upgrade is success without any issue.

Or Try this: https://www.stephenwagner.com/2016/12/07/vmware-vsphere-6-5-conflicting-vibs-when-upgrading-esxi-6-0-to-6-5/