AWS SDK for iOS 2.11.1

Bug Fixes

• AWSPinpoint
  • Fixed a bug retrieving APNS device tokens on iOS 13. See Issue #1926

Misc. Updates

• Model updates for the following services
  • Amazon EC2
    • NOTE: This model update includes a change to the mapping of certain service-emitted enum values. The symbols to which these values map
      remains the same, but customers using older versions of the AWSEC2 SDK may wish to upgrade. Enum values affected:
      • "deleted-running" is now "deleted_running"
      • "deleted-terminating" is now "deleted_terminating"
      • "pending-fulfillment" is now "pending_fulfillment"
      • "pending-termination" is now "pending_termination"
  • Amazon Simple Email Service
• Removed redundant import of AWSNetworking.h from model service files. See PR #1855. Thanks @thii!