chore(deps): bump yaml and aws-cdk-lib in /examples/http-axum/cdk (#1140)

Removes [yaml](https://github.com/eemeli/yaml). It's no longer used after updating ancestor dependency [aws-cdk-lib](https://github.com/aws/aws-cdk/tree/HEAD/packages/aws-cdk-lib). These dependencies need to be updated together.


Removes `yaml`

Updates `aws-cdk-lib` from 2.240.0 to 2.250.0
- [Release notes](https://github.com/aws/aws-cdk/releases)
- [Changelog](https://github.com/aws/aws-cdk/blob/main/CHANGELOG.v2.alpha.md)
- [Commits](https://github.com/aws/aws-cdk/commits/v2.250.0/packages/aws-cdk-lib)

---
updated-dependencies:
- dependency-name: yaml
  dependency-version: 
  dependency-type: indirect
- dependency-name: aws-cdk-lib
  dependency-version: 2.250.0
  dependency-type: direct:production
...

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examples/http-axum/cdk/package-lock.json

@@ -20,7 +20,7 @@
     "typescript": "~5.3.3"
   },
   "dependencies": {
-    "aws-cdk-lib": "^2.240.0",
+    "aws-cdk-lib": "^2.250.0",
     "cargo-lambda-cdk": "^0.0.35",
     "constructs": "^10.0.0",
     "source-map-support": "^0.5.21"