session_timezone setting demoted to experimental in version 23.6

Why it matters

This change indicates that the session_timezone setting is not yet stable and may undergo further modifications. Demoting it to experimental signals users to use it cautiously as its behavior or implementation might change based on future feedback and development.

How to use it

Users can still enable the session_timezone setting as before, but should be aware it is experimental. Enable it by setting session_timezone in the user settings or query settings as needed, while monitoring updates for any changes.