Upgrade AWS SDK to support using service account IAM roles

A couple of months ago, AWS launched a new feature for granting IAM roles to kubernetes service accounts, instead of granting an IAM role to an EC2 machine or using an open source project like kube2iam to grant the IAM role to the pod. 

Amazon released this guide on how to set up service account IAM roles - https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts.html, and in order to support that, the client version needs to be at least 1.11.623 - https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts-minimum-sdk.html. The version we have in Artifactory now is 1.11.496: 

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-s3</artifactId>
    <version>1.11.496</version>
    <exclusions>
        <exclusion>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
        </exclusion>
    </exclusions>
</dependency>