Bump aws-amplify from 5.3.15 to 5.3.21

Bumps [aws-amplify](https://github.com/aws-amplify/amplify-js) from 5.3.15 to 5.3.21.
- [Release notes](https://github.com/aws-amplify/amplify-js/releases)
- [Commits](https://github.com/aws-amplify/amplify-js/compare/aws-amplify@5.3.15...aws-amplify@5.3.21)

---
updated-dependencies:
- dependency-name: aws-amplify
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -57,7 +57,7 @@
     "@mui/x-data-grid": "^6.19.4",
     "@popperjs/core": "^2.11.8",
     "apollo-client": "^2.6.10",
-    "aws-amplify": "^5.3.15",
+    "aws-amplify": "^5.3.21",
     "classnames": "^2.5.1",
     "clipboard-copy": "^4.0.1",
     "core-js": "^3.37.1",