Bump cognito-at-edge from 1.5.2 to 1.5.3 in /files/deployable

Bumps [cognito-at-edge](https://github.com/awslabs/cognito-at-edge) from 1.5.2 to 1.5.3.
- [Release notes](https://github.com/awslabs/cognito-at-edge/releases)
- [Changelog](https://github.com/awslabs/cognito-at-edge/blob/main/CHANGELOG.md)
- [Commits](awslabs/cognito-at-edge@1.5.2...1.5.3)

---
updated-dependencies:
- dependency-name: cognito-at-edge
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

files/deployable/package.json

@@ -16,7 +16,7 @@
     "patch-package": "8.0.0"
   },
   "dependencies": {
-    "cognito-at-edge": "1.5.2",
+    "cognito-at-edge": "1.5.3",
     "node-cache": "5.1.2",
     "pino": "9.3.1"
   }