Failing "Should not retry if the body is a stream"

[penge]

🐛 Bug Report

Failing test found. Only on CI.

Logs: https://github.com/elastic/elasticsearch-js/pull/1142/checks?check_run_id=579324431

# Subtest: Should not retry if the body is a stream

found: 0
wanted: 1
compare: ===
at:
    line: 667
    column: 9
    file: test/unit/transport.test.js
stack: |
    test/unit/transport.test.js:667:9
    onResponse (lib/Transport.js:157:16)
    ClientRequest.<anonymous> (lib/Connection.js:94:9)

[delvedor]

I've opened #1158 with the fix for this issue as well.
Thank you for reporting!