Switch log level back to info when request fails

[dominykas]

https://github.com/octokit/plugin-request-log.js/pull/382/files changed the log level for failed requests to error from info. I'm not sure if that was a deliberate change, but it is undesireable where I am - error handling is done by the consumer application and errors in the console are distracting.

I also found no obvious way to switch off that log line - switching off all octokit error logs also feels like something one should not do lightly?

Happy to open a PR with whatever fix is desired (just switch back to info? add an explicit option with some default value?)

[github-actions]

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[dominykas]

@nickfloyd I see this has been triaged and accepted - I'm happy to open a PR with whatever changes are acceptable.