Verify or Update Client Support Matrix before server 0.9.0 / client 0.1.0 release

[leekeiabstraction]

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• I searched in the issues and found nothing similar.

Description

We need to check / update client support matrix before server 0.9.0 release announcement so that people who look at client support matrix after announcement will get the latest / most accurate info:

https://github.com/apache/fluss/blob/3a803dfd812398decbfbced81b655d6a8839351e/website/docs/apis/client-support-matrix.md

Willingness to contribute

• I'm willing to submit a PR!