CORS Checker workflow improvements

[meme-lord]

• Excluded a false positive case ( Access-Control-Allow-Origin: * + Access-Control-Allow-Credentials: true is not useful)
• Improved the title of findings by including whether the misconfig allows creds or not

Please ensure your pull request adheres to the following guidelines:

• Follow the same folder structure as other workflows (see template).
• Has a proper author name and workflow description.
• If using compiled code in JS Nodes, provide the source code for each.
• If using a 3rd party library, include its license as a comment in the source code.

Thanks for contributing!

[bebiksior]

LGTM, thanks!