Set `log_level` to `debug` when rerunning a job with debugging

Not quite sure what variable needs to be read but based on prior experience and a quick glance at the docs this seems possible.

https://docs.github.com/en/actions/managing-workflow-runs-and-deployments/managing-workflow-runs/re-running-workflows-and-jobs
https://docs.github.com/en/actions/monitoring-and-troubleshooting-workflows/troubleshooting-workflows/enabling-debug-logging

Basically I am wishing that when a run fails and you use the "Re-run failed jobs" with "Enable debug logging" it would automatically always set the log_level to debug.

@jdx I realized that the changes from #129 don't actually work since the log_level defaults to info in the action.yml file. I'll make a PR later today to restore the behaviour that I did originally, always overriding the process.env["MISE_LOG_LEVEL"] when running in debug mode. 🤦🏼

Doh, I should've tested the most recent change myself

Classic case of only testing the initial changes and not the ones getting merged.

Would love to write a test case for this but I have no idea how to do that... 🤔 Looks like debug mode can be enabled with an environment variable but is there a way to check the output includes debug output in a nice way? 🤔

jdx / mise-action

Set `log_level` to `debug` when rerunning a job with debugging #128