sesv2: Use AWS SDK v2

[kamilturek]

This PR moves sesv2 to AWS SDK v2 so all upcoming SESv2 resources and data sources can be implemented using the newest SDK.

No SESv2 resources/data resources are implemented at the moment.

Relates #26796.

[github-actions]

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[github-actions]

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[kamilturek]

I'll resolve the merge conflict.

[github-actions]

This functionality has been released in v4.34.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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