chore(deps): bump @aws-appsync/utils from 1.12.0 to 2.1.1 in /cdk

Bumps @aws-appsync/utils from 1.12.0 to 2.1.1.

---
updated-dependencies:
- dependency-name: "@aws-appsync/utils"
  dependency-version: 2.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

cdk/package-lock.json

@@ -23,7 +23,7 @@
     "typescript": "^5.9.2"
   },
   "dependencies": {
-    "@aws-appsync/utils": "^1.12.0",
+    "@aws-appsync/utils": "^2.1.1",
     "@aws-sdk/client-cognito-identity-provider": "^3.987.0",
     "@types/aws-lambda": "^8.10.149",
     "aws-cdk-lib": "^2.240.0",