fix(codecov): update codecov-upload.yml action to upload report with correct path

[kumvprat]

Reason for this change

Fixing the upload path for codecov-upload.ymp based workflow

Description of changes

Last successful run of CodeCov report was https://github.com/aws/aws-cdk/actions/runs/15032809949/job/42248762782
which uploaded to certain path configured in codecov

Uploads after that have been failing silently due to path match failures in codecov

Creating the path ./coverage/packages/aws-cdk-lib/core/coverage and uploading to it should allow code coverage to be populated again

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

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

[aws-cdk-automation]

(This review is outdated)

[kumvprat]

Exemption Request as this is a github workflow change which doesn't need integration or unit testing

[vishaalmehrishi]

Uploads after that have been failing silently due to path match failures in codecov

Did we change something which caused this?

[kumvprat]

The workflow before : https://github.com/aws/aws-cdk/actions/runs/15032809949/workflow

It was broken into multiple steps here : #34451

With the new workflow style the coverage files are not present in the path that's used by codecov : https://github.com/aws/aws-cdk/actions/runs/15921816999/job/44910111075#step:3:228

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 2cea408
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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