x11/elementary-terminal: Update 0.7.2 => 0.8.0

Upstream changes:

• Switched to GTK 4.
• Switched to Granite 7.
• New dependency: libadwaita
• Remove dependency: libhandy

Changelogs:

• https://github.com/elementary/terminal/releases/tag/8.0.0
• https://github.com/elementary/terminal/releases/tag/8.1.0

Commit log:
https://github.com/elementary/terminal/compare/7.2.0...8.1.0

Reported by: portscout
Approved by: no maintainer
Approved by: osa, vvd (Mentors, implicit)