[Bug]: credential issues when running e2e tests

### Expected Behavior

e2e tests should be able to run

### Actual Behavior

> Retry validateCredentials: attempt 1 of 12 failed: Credentials could not be loaded, please check your action inputs: Could not load credentials from any providers. Retrying after 35ms.

https://github.com/aws/aws-durable-execution-sdk-java/actions/runs/27803033732/job/82393927371?pr=468

### Steps to Reproduce

- someone without the permission created a PR
- e2e workflow for this PR fail

### SDK Version

N/A

### Java Version

17

### Is this a regression?

No

### Last Working Version

_No response_

### Additional Context

_No response_

Start with the failed GitHub Actions run and the repository's e2e workflow configuration, focusing on how credentials are provided when a pull request is created by someone without the required permission. Compare the workflow's behavior for permitted and unpermitted contributors; done means e2e tests run successfully for such pull requests without the credential-loading failure.

Written by the indexing model from the issue text.