Bump aws-sdk from 2.517.0 to 2.521.0

Bumps [aws-sdk](https://github.com/aws/aws-sdk-js) from 2.517.0 to 2.521.0.
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js/compare/v2.517.0...v2.521.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

yarn.lock

@@ -1355,9 +1355,9 @@ autoprefixer@^9.4.7:
     postcss-value-parser "^4.0.0"
 
 aws-sdk@^2.345.0:
-  version "2.517.0"
-  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.517.0.tgz#415e6732d46c478a4f1867920d25af57651063b1"
-  integrity sha512-CX0b+8StmzAGQOP5eoBYJExpjTdPeVPig3NC4crq71/0LkrIDGcc6ekVEl0Rx23WTyGDzExeDD1be1HvQNwHdA==
+  version "2.521.0"
+  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.521.0.tgz#b7b41084fdc9e8b134520f054c06e3908df9321a"
+  integrity sha512-YRViGahZoHq0lEsy0Cq7bqaLzP8OTzjg35Hz08Rv88ltk+b5UWVpDgIWls7mXCBNTBTYjbfbeGXzNaHJBLKlpA==
   dependencies:
     buffer "4.9.1"
     events "1.1.1"