[VOTE] PIP-273: Enable hostname verification by default

[Michael Marshall]

Hello,

This is the vote thread for PIP 273.

PR: https://github.com/apache/pulsar/pull/20453
Discussion: https://lists.apache.org/thread/7dprl8wvq4r2y8n4p32gwrl6jn97yckq

The vote will be open for at least 48 hours.

Thanks,
Michael