cmd/go: fix TestBuildIDContainsArchModeEnv
cmd/go: fix TestBuildIDContainsArchModeEnv

Changing GOARCH, GOARM, GO386 leads to a stale dependency.

Updates #24436.

Change-Id: I5b5b3fca6401be50fa81fb040bc56356de7555de
Reviewed-on: https://go-review.googlesource.com/112975
Run-TryBot: Yury Smolsky <f26331c55f2e9b348f65eb11cafdbe38d0f7ac5e@smolsky.by>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

cloudflare/go,cloudflare/go,CAFxX/go,cloudflare/go,CAFxX/go,akutz/go,CAFxX/go,CAFxX/go,josharian/go,nawawi/go,josharian/go,akutz/go,golang/go,golang/go,josharian/go,cloudflare/go,akutz/go,nawawi/go,golang/go,CAFxX/go,akutz/go,cloudflare/go,josharian/go,golang/go,akutz/go,cloudflare/go,CAFxX/go,nawawi/go,nawawi/go,josharian/go,nawawi/go,nawawi/go,akutz/go,josharian/go,nawawi/go,CAFxX/go,cloudflare/go,josharian/go,nawawi/go,josharian/go,golang/go,akutz/go,golang/go,golang/go,golang/go,cloudflare/go,CAFxX/go,akutz/go