[VOTE] PIP-453: Improve the metadata store threading model

[Yunze Xu]

Hi all,

I'd like to start the vote for PIP-453:
- discussion link:
https://lists.apache.org/thread/0cfdyvj96gw1sp1mo2zghl0lmsms5w1d
- proposal: https://github.com/apache/pulsar/pull/25173

Thanks,
Yunze