Bump aws-sdk from 2.10.12 to 2.10.13
Bump aws-sdk from 2.10.12 to 2.10.13

Bumps [aws-sdk](https://github.com/aws/aws-sdk-ruby) from 2.10.12 to 2.10.13.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases/tag/v2.10.13)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/v2.10.12...v2.10.13)
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