devel/go-tools: update to 0.37.0

godoc has been removed, use new port net/pkgsite as a replacement.

Selected upstream changes:

 - internal/stdlib: update stdlib index for Go 1.25.0
 - godoc,cmd/godoc: delete
 - x/tools: assume go1.24 and simplify
 - cmd/goimports: add counter (telemetry)

Changelog: https://github.com/golang/tools/compare/v0.36.0...v0.37.0