sysutils/lsblk: update to 3.4

• Add sysctl -n kern.disks to disk listing.
• Reset LABEL in __gpart_present function.
• Fix behavior with [bootme] and [bootonce] flags from gpart(8).
• Disable GPTID for label display.
• Add -d|--disks option to list entire disks only.

PR: 255807
Reported by: vermaden@interia.pl (maintainer)