chore: fix lfs files that should have been pointers but aren't (#34636)

### Reason for this change

When doing a fresh clone of the repo we get:
```
Encountered 5 files that should have been pointers, but weren't:
	packages/@aws-cdk-testing/framework-integ/test/aws-appconfig/test/integ.configuration.js.snapshot/asset.8a84a8f465fbe0c48af2c256847ec9abfe095d23781b749728b998315f3ad732.zip
	packages/@aws-cdk-testing/framework-integ/test/aws-eks/test/integ.eks-addon.js.snapshot/asset.12157b27d30ab71eb24ae65825f672ba5cc2c09dbb1703cd7adfcff3aeaca136.zip
	packages/@aws-cdk-testing/framework-integ/test/aws-eks/test/integ.eks-addon.js.snapshot/asset.6094cb0ff874f89ab5ab24fb6b9417df0fdeb6966645f90c88ec1d7e28130112.zip
	packages/@aws-cdk-testing/framework-integ/test/aws-eks/test/integ.eks-addon.js.snapshot/asset.93d96d34e0d3cd20eb082652b91012b131bdc34fcf2bc16eb4170e04772fddb1.zip
	packages/@aws-cdk-testing/framework-integ/test/aws-synthetics/test/integ.canary.js.snapshot/asset.b1b777dcb79a2fa2790059927207d10bf5f4747d6dd1516e2780726d9d6fa820.zip
```

This can be verified with: `git lfs fsck` which. give the same problematic 5 files.

### Description of changes



Ran `git lfs migrate import --no-rewrite <path to the 5 files>`.

### Description of how you validated changes

Ran `git lfs fsck`, no more errors.

### Checklist
- [X] 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*

Author: leonmk-aws