chore: format expected output (#31235)

This test (hotswap deployment for ecs service detects failed deployment and errors) sometimes works in our pipeline and sometimes works locally without the formatting. Sometimes it fails.

I'm not actually particularly sure why, but adding in the expected formatting _should_ make this pass reliably.

NOTE: When I ran yarn lint --fix after the linter failed in `cli.integtest.ts`, it did a lot more formatting than expected.
The only actual non-formatting changes to this file are in the last test on lines 2078 through 2099.

### Issue # (if applicable)

Closes #<issue number here>.

### Reason for this change



### Description of changes



### Description of how you validated changes



### Checklist
- [ ] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk-testing/cli-integ/package.json

@@ -41,6 +41,7 @@
     "@octokit/rest": "^18.12.0",
     "aws-sdk": "^2.1653.0",
     "axios": "^1.7.2",
+    "chalk": "^4",
     "fs-extra": "^9.1.0",
     "glob": "^7.2.3",
     "jest": "^29.7.0",
@@ -72,4 +73,4 @@
   "publishConfig": {
     "tag": "latest"
   }
-}
+}