Replace timezone.json with constants and update chart's timezone

[gabrielborgesdm]

Summary

Replace timezone.json with @verifiedinc/constants and update chart's timezones props

Testing

storybook

Checklist

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas to a borderline excessive amount
• I have made any relevant changes to the documentation, including the project readme.
• I have run and tested the changes locally
• If it is a core feature, I have added appropriate unit tests.
• Any dependent changes have been merged and published in upstream projects.

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