Amazon SES API Signature Version 4

I received this email from Amazon SES and was wondering how that will affect Mailster’s SES plugin:

Amazon Web Services currently supports Amazon SES API requests that are signed using Signature Version 3 and Signature Version 4 processes. Signature Version 4 further enhances the security around authentication and authorization of Amazon SES customers by using a signing key instead of your secret access key. To improve the security for our customers, beginning October 1, 2020, Amazon Signature Version 3 will be turned off (deprecated) in Amazon SES in favor of Signature Version 4.

Amazon SES customers who are still using Signature Version 3 must migrate to Signature Version 4 by September 30, 2020. After that, Amazon SES will only accept requests that are signed using Signature Version 4.