If you run sctl too many times successively, github api will ratelimit

[marcoceppi]

Currently if you're running sctl in a lot of loops you can trigger the github ratelimit for unauthenticated API:

INFO[0002] failed to check for latest version: GET https://api.github.com/repos/vapor-ware/sctl/tags: 403 API rate limit exceeded for 108.56.192.95. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.) [rate reset in 30m13s]

I don't think this is a bad thing, but I do think the logging should be lowered so it's not included in default output.

[lazypower]

ah, this is on the update check 🤔 good point. we didn't want to just swallow that output when we initially landed it 🤔 we may need a better qualifier for when to surface a failed update check.