Backport of ci: update backport assistant to 0.3.4 into release/1.15.x#17490

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

backport/jm/NET-4232/radically-massive-sparrowhashicorp/consul:backport/jm/NET-4232/radically-massive-sparrowCopy head branch name to clipboard