KDE: Update KDE Frameworks 6 to 6.24.0

Announcement: https://kde.org/announcements/frameworks/6/6.24.0/

Ports changes:

devel/kf6-kcmutils:

• Renew USE_KDE

misc/kf6-purpose:

• Renew USE_KDE

net/kf6-kholidays:

• Use bison