USES= go: support v2 and higher proxy URLs

[ngie]

Summary

golang projects with versions greater than 2.x have different URLs
presented for them via ${GOPROXY} [1]. In particular, the major
version is added to the URL and to the extracted GOPROXY provided
DISTFILE(s).

This change adjusts MASTER_SITES and WRKSRC with USES+= go to
support the "Major Version Suffixes" documented in the go module
docs [1].

1. https://go.dev/ref/mod#major-version-suffixes

Signed-off-by: Enji Cooper <[e-mail]>

Test Plan

This change allows me to upgrade devel/golangci-lint to v2.0.2 . See D49724 for more details.

[arrowd]

Not a Go user, but semantically the change looks fine.

[adamw]

This is a good approach. I'm 👍 on behalf of the go team.

Thanks, Enji!

[ngie]

In D49723#1133959, @adamw wrote:

This is a good approach. I'm 👍 on behalf of the go team.

Thanks, Enji!