sysutils/di: Update to 4.48.0.1

• Update di.spec
• Update mkconfig to version 2.6.3

Changelog: https://sourceforge.net/p/diskinfo-di/code/ci/default/tree/README.txt

PR: 253162
Submitted by: Naram Qashat <cyberbotx@cyberbotx.com> (maintainer)
Approved by: arrowd, tcberner (mentors, implicit)