Improve logging around test results deployment errors

[godrei]

Checklist

• [x] I've read and followed the Contribution Guidelines
• [x] step.yml and README.md is updated with the changes (if needed)

Version

Requires a PATCH version update

Context

With the current logs of the step it is hard to identify which step of the test results deployment has failed. This PR improves error logging around test results deployment.

Changes

• Results.Upload errors are wrapped with context
• Minor improvements around test results deployment logging