Enable vectara destination on cloud and OSS

[flash1293]

This PR enables the Vectara destination as it's ready to be used.

[vercel]

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1 Ignored Deployment

Name	Status	Preview	Updated (UTC)
airbyte-docs	⬜️ Ignored (Inspect)		Jan 3, 2024 2:19pm

[github-actions]

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• PR name follows PR naming conventions
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[alafanechere]

Do you really want to enable it on Cloud as it's a community / alpha connector?