devel/lab: update to 0.25.2.0.20230225220034

[fuz]

Summary

devel/lab: update to 0.25.2.0.20230225220034

This is an intermediate version right after 0.25.1,
holding an update of golang.org/x/sys needed to enable
the build on riscv64.

Changelog: https://github.com/zaquestion/lab/releases/tag/v0.25.1

Sponsored by:	Berliner Linux User Group e.V.
Approved by:	swills (maintainer)
Approved by:	... (mentor)

@swills told me he doesn't care if I update his ports.

Test Plan

Tested manually on riscv64 FreeBSD 13.1.
Tested with Poudriere on arm64 i386 amd64 FreeBSD 12.4 13.1.
See http://fuz.su/~fuz/freebsd/batch6