updated go-utils

[scranton]

• primarily updated go-utils to pick up fixes for package management
• resulted in updating solo-kit and other dependencies
  • tried hard to massage dependency updates to minimize any functional changes BOT NOTES: resolves https://github.com/solo-io/squash/issues/220

[mitchdraft]

@scranton I think our builds will be repeatable once again if we remove these three lines (and any references to them)

https://github.com/solo-io/squash/blob/master/pkg/version/version.go#L6

https://github.com/solo-io/squash/blob/master/Makefile#L47

https://github.com/solo-io/squash/blob/master/Makefile#L42

[solo-git-bot[bot]]

Issues linked to changelog: https://github.com/solo-io/squash/issues/220