Mk: ghostscript: modernize

• add support for GhostScript 10
• bump versions for dependency lines
• 9 and agpl are synonymous, represent this in the Makefile

PR: 270989 (point 3 + 5)
Reported by: Chad Jacob Milios <milios@ccsys.com> (original)
Continued work: Michael Osipov <michael.osipov@siemens.com>
Reviewed by: diizzy
MFH: 2023Q3