fix: improved error handling when update.k3s.io returns a 5XX or invalid response #1170
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What
Better handling of http call made to update.k3s.io.
Update the way of handling the http client call for fetchLatestK3sVersion, to make it more testable.
Why
#1129
Implications
This will check the http status code to the calls made to update.k3s.io, and handle it accordingly.