chore(deps): bump aws-amplify from 6.14.4 to 6.15.5

Bumps [aws-amplify](https://github.com/aws-amplify/amplify-js) from 6.14.4 to 6.15.5.
- [Release notes](https://github.com/aws-amplify/amplify-js/releases)
- [Commits](https://github.com/aws-amplify/amplify-js/compare/[email protected]@6.15.5)

---
updated-dependencies:
- dependency-name: aws-amplify
  dependency-version: 6.15.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

frontend/package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "@aws-amplify/ui-react": "^6.11.2",
     "@aws-crypto/sha256-js": "^5.2.0",
-    "aws-amplify": "^6.14.4",
+    "aws-amplify": "^6.15.5",
     "axios": "^1.9.0",
     "normalize.css": "^8.0.1",
     "react": "^18.3.1",