GitHub Link Check throw 403 for github.com

[hrittikhere]

/kind bug

What steps did you take and what happened:
I think there might be some issue with the action implementation for GitHub related links as the link can be perfectly accessed via a WebUI. Now after further investigation via curl we can see:

<div id='message'>
<h2>The request is blocked.</h2></div>
<div id='errorref'>
<span>0/ByiYgAAAAD0Jl+OyjIrTI2PolL1vAbHTU5aMjIxMDYwNjE0MDI5ADU5NmQ3OGEyLWNhNWYtNDc5ZC1iY2RjLTA4MzU4MzMxNzRiMg==</span>
</div>

403 for github.com because it blocks requests

What did you expect to happen:
Link Checks for GitHub will pass and not throw a 403

More Details here: #613 (comment)