Fix: #233 | Use get_bucket_location to check if S3 Bucket exists

[gugacavalieri]

Fixes: #233.

Use get_bucket_location() method to check if S3 bucket exists instead of listing all the S3 buckets in a AWS account. This should allow the user to use S3 buckets in a another account (cross-account) if desired.

This should also fix the CORS error reported in this PR: https://github.com/Qovery/Replibyte/pull/212

[evoxmusic]

Thank you for providing this improvement. I have turned on the check. I'll merge this if it's all green :)

[ArcRiiad]

Any update on this PR? can help if needed