ROX-23254: Add AWS SES client V2

[kurlov]

Description

Add AWS SES V2 golang client to Email service

Checklist (Definition of Done)

• Unit and integration tests added
• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.
• Add secret to app-interface Vault or Secrets Manager if necessary
• RDS changes were e2e tested manually
• Check AWS limits are reasonable for changes provisioning new resources
• (If applicable) Changes to the dp-terraform Helm values have been reflected in the addon on integration environment

Test manual

N/A

[kurlov]

this is the recommended way to get session in aws-sdk-go-v2
Migrating from NewSession with aws.Config options

[johannes94]

Looks good.

I'd love to have an integration test with actual AWS SES here, but we could also instead go for an e2e test once we have the full service ready, so I'll approve.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johannes94, kurlov

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