net-p2p/litecoin: update to 0.21.2.1

[hsw_bitmark.com]

Summary

update litecoin and associated port to latest version

Test Plan

poudriere testport -j 13_0-amd64 net-p2p/litecoin

poudriere bulk -C -j 13_0-amd64 net-p2p/litecoin net-p2p/litecoin-daemon net-p2p/litecoin-utils

install litecoin-daemon and litecoin-utils test locally in regression mode

[arrowd]

Will push after build-test.

Note that TESTS option is still broken.

[arrowd]

Pushed in, thank you!