x11/arcan-trayicon: Update 0.7.0.1 => 0.7.1

Changelog:
https://codeberg.org/letoram/arcan/src/tag/0.7.1/CHANGELOG.md

• Upstream moved to Codeberg.
• Use PKGNAMESUFFIX.
• Fix LIB_DEPENDS.

PR: 292083
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>