net-im/tokodon: update to 23.04.0

Changes:

• see previous messages when replying
• ability to post polls
• proxy support
• improved handling of follow requests

Full release article: https://kde.org/announcements/gear/23.04.0/

Port changes:

• removed MASTER_SITES because Tokodon is now a part of KDE Gear

QA:

• poudriere testport: 12.4-amd64, 12.4-i386, 13.2-amd64
• builds and runs on 13.2-RELEASE
• portclippy is happy
• portlint is happy

QA limitations:

• not able to test 13.2-arm64.aarch64 because lang/rust fails to build with qemu-user-static (ref. lang/rust/Makefile:146)