fix: Could not parse GitHub owner/repo name from AWS CodeBuild project

[jeremywaller]

This fixes an error where the Github repo and owner could not be parsed from the Codebuild projects response object.

Error message: Could not parse GitHub owner/repo name from AWS CodeBuild project XXX. location=XXX

It appears the format of the URL for the GitHub repo returned by CodeBuild has changed. This PR updates the regular expression used to parse that URL.