Improving error visibility

[Bruno-DaSilva]

Hi @nikordaris :)

Thanks for the work on this. In trying to set this up on my own repos, I ran into some configuration issues that I had to debug. In the current implementation, the workflow shows green with no errors logged even when there are, say, 401/403s in the exporter.

I managed to get 1. error logging and 2. job failure on otel errors working for myself and thought I'd give back in an MR :)

See: #119

[nikordaris]

I responded on the PR, I think this is a great improvement opportunity!