build: Add -e flag for go list to fix build issues

Think this will fix building, would like to add a mixin or two but my git diff is to large since main builds are failing.

Installing tools from hack/tools.go
tools.go:8:2: import "github.com/brancz/gojsontoyaml" is a program, not an importable package

https://github.com/golang/go/issues/61857#issuecomment-1670182050

@paulfantom can you take a look when you find time? Thanks!

I wish I saw this before I did all the investigation to https://github.com/monitoring-mixins/website/pull/38

(maybe update the title so @paulfantom realizing its fixing the build, not just because you want to)

Hi1 Any update on this? I think fix is rather straightforward? thanks