devel/mill: Update 0.11.10 => 0.12.5
Changelog:
https://github.com/com-lihaoyi/mill/blob/main/changelog.adoc#0125
- Update MASTER_SITES and WWW.
- Replace custom do-extract with custom EXTRACT_CMD.
PR: 295119
Sponsored by: UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>
MFH: 2026Q2