AWS::SQS::Queue - use OpenSSL for Digest needs
updated SQS queue spec to stub hexdigest on OpenSSL::Digest::MD5 instead of Digest::MD5
Fixed error message for invalid AWS::S3 signature version.
Added support for the OpenID Connect provides to AWS::IAM::Client.
Tag release v1.59.0
Fix a typo in add_queue_message.rb

s/erxisting/existing/
Correct EC2Provider expiration timeout
Merge pull request #671 from jpb/credential-expiration-doc

Correct EC2Provider expiration timeout
Merge pull request #670 from benstiglitz/patch-1

Fix a typo in add_queue_message.rb
Fixed an issue with CloudFront client sending broken API version.
Tag release v1.59.1

References:
  #670, #671
Merge pull request #663 from fallwith/master

AWS::SQS::Queue - use OpenSSL for Digest needs