Bump aws-sdk from 2.1620.0 to 2.1621.0 (#1766)

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.1620.0 to 2.1621.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](aws/aws-sdk-js@v2.1620.0...v2.1621.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.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 "2.1620.0"
-  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.1620.0.tgz#712c72ccaca0c86e6c70f25eb5f6022f05249c57"
-  integrity sha512-G+mBI/VzuFpobBe+pu++ELc3YXSx2UzBTiLmQuZIQDi2+9VEU+/8QFAH45SI8PRPDRCcn4NMK4Euqs0uCyObvQ==
+  version "2.1621.0"
+  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.1621.0.tgz#811464489bd1d0baedf87ed608e5ef9b65a1a357"
+  integrity sha512-v6rxF1u0GpQG1Y9Wul9iaqulSV2uEnp0kHKd6/lZcvEgTYhtJ8N0hOLfqRSWHjH5PaIa46hR9zSAp51r8DJ/OA==
   dependencies:
     buffer "4.9.2"
     events "1.1.1"