MPU operations wrapped in CompletionException

[ahmarsuhail]

Problem:

Related to #160 , abort MPU operation is still wrapped in a CompletionException. Trying to abort a MPU without an invalid uploadID gives java.util.concurrent.CompletionException: software.amazon.awssdk.services.s3.model.NoSuchUploadException: The specified upload does not exist.

[kessplas]

Addressed in #174
Released in https://github.com/aws/amazon-s3-encryption-client-java/releases/tag/v3.1.0