Fix bk/cli test

Author: triarius

Diff for: .buildkite/steps/test-bk.sh

@@ -3,14 +3,14 @@ set -euo pipefail
 
 
 echo "--- :package: Downloading bk binary"
-curl -Lfs -o bk https://github.com/buildkite/cli/releases/download/v1.2.0/cli-linux-amd64
-chmod +x ./bk
+go install github.com/buildkite/cli/v2/cmd/bk@pdp-478-teach-bk-cli-how-to-receive-async
 
 echo "--- :package: Downloading built binary"
 rm -rf pkg/*
 buildkite-agent artifact download pkg/buildkite-agent-linux-amd64 .
 mv pkg/buildkite-agent-linux-amd64 pkg/buildkite-agent
 chmod +x pkg/buildkite-agent
 
+echo "--- :buildkite: Uploading a pipeline with bk cli as a backend"
 export PATH="$PWD/pkg:$PATH"
-./bk run --debug .buildkite/pipeline.bk-test.yml
+bk run --debug .buildkite/pipeline.bk-test.yml