chore(deps): bump @aws-sdk/client-cloudformation in /unicorn_web

Bumps [@aws-sdk/client-cloudformation](https://github.com/aws/aws-sdk-js-v3/tree/HEAD/clients/client-cloudformation) from 3.812.0 to 3.859.0.
- [Release notes](https://github.com/aws/aws-sdk-js-v3/releases)
- [Changelog](https://github.com/aws/aws-sdk-js-v3/blob/main/clients/client-cloudformation/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-js-v3/commits/v3.859.0/clients/client-cloudformation)

---
updated-dependencies:
- dependency-name: "@aws-sdk/client-cloudformation"
  dependency-version: 3.859.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

unicorn_web/package.json

@@ -19,7 +19,7 @@
     "@aws-lambda-powertools/logger": "^2.20.0",
     "@aws-lambda-powertools/metrics": "^2.20.0",
     "@aws-lambda-powertools/tracer": "^2.20.0",
-    "@aws-sdk/client-cloudformation": "^3.812.0",
+    "@aws-sdk/client-cloudformation": "^3.859.0",
     "@aws-sdk/client-cloudwatch-logs": "^3.812.0",
     "@aws-sdk/client-dynamodb": "^3.812.0",
     "@aws-sdk/client-eventbridge": "^3.812.0",