Bump aws-sdk from 2.1616.0 to 2.1618.0

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1616.0 to 2.1618.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](aws/aws-sdk-js@v2.1616.0...v2.1618.0)

---
updated-dependencies:
- dependency-name: aws-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

yarn.lock

@@ -189,9 +189,9 @@ available-typed-arrays@^1.0.5:
   integrity sha512-DMD0KiN46eipeziST1LPP/STfDU0sufISXmjSgvVsoU2tqxctQeASejWcfNtxYKqETM1UxQ8sp2OrSBWpHY6sw==
 
 aws-sdk@^2.458.0:
-  version "2.1616.0"
-  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.1616.0.tgz#faeaa8eb252e48d5eb9145bb3dc7b58f98c86e6b"
-  integrity sha512-Wes2FOJn/5Bo35ku+KYvn/H+xnuPuI97mQKxhU+d3TczAY56rFH/qw7Bff8HI0Gi6m6lDEhhq76qvG4gfdPexg==
+  version "2.1618.0"
+  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.1618.0.tgz#591b27e0ea38dcfd2d1492dc31aaf98a39ee1035"
+  integrity sha512-yfDi9cOpT+dnKMHaR8aFhRyISMItQrRW0v5usaNh7WvXl/YVN1YI0tMSdF1riqaOpbwKgk7162YBj+RoALimHg==
   dependencies:
     buffer "4.9.2"
     events "1.1.1"