Update LabKit library to v1.16.0

Alejandro Rodríguezrequested to merge
vendor-v1.16.0 into main
  • include original address in correlation CIDR checks (ae96001)
  • run make recipes in parallel during backward compat check (efa9c71)

See https://gitlab.com/gitlab-org/labkit/-/releases/v1.16.0

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