Backport of [NET-4865] security: Update Go version to 1.20.6 into release/1.15.x#18194

hc-github-team-consul-core merged 1 commit intorelease/1.15.xhashicorp/consul:release/1.15.xfrom

backport/zalimeni/net-4865-bump-go-cve/unduly-robust-sunbeamhashicorp/consul:backport/zalimeni/net-4865-bump-go-cve/unduly-robust-sunbeamCopy head branch name to clipboard