Uses the homebrew_owner as the user to check if a cask has been casked

[jeroenj]

Description

Before this change it would not find any casks as my homebrew user is different than the one running Chef (Chef is ran as root).

Check List

• [ ] All tests pass. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/TESTING.MD
• [ ] New functionality includes testing.
• [ ] New functionality has been documented in the README if applicable
• [ ] All commits have been signed for the Developer Certificate of Origin. See https://github.com/chef-cookbooks/community_cookbook_documentation/blob/master/CONTRIBUTING.MD

[tas50]

Fixed up in the UI and merged. Thanks for noticing this