[BUG] Online test suite fails when run in github actions

[oshoma]

Describe the bug
The "Run Online Tests" github action fails when attempting to run tests.

To Reproduce
Steps to reproduce the behavior:

1. Go to "Run Online Tests" github action
2. Click on 'Run Workflow'
3. Wait until action completes
4. Look at action results to see many errors

See https://github.com/Aggregate-Intellect/sherpa/actions/runs/8607639155/job/23588508515 for an example.

Expected behavior
The action should run and complete successfully, running tests in online mode.

Additional Context

1. This github action requires several secrets to be set within the repository settings, but as of April 8 I can't see any secrets set on github. This may be a source of trouble.
2. Some of the secret names in the workflow file don't match what we expect in .ENV, e.g. ${{ secrets.SERPAAPIKEY }} should be SERPER_API_KEY. We should use the names expected in src/sherpa_ai/config/init.py