[BUG] Homebrew updates silently fail when Xcode license hasn't been accepted.

### New Issue Checklist - [X] I updated Pearcleaner to the latest version and still observe the issue - [X] I searched for [existing GitHub issues](https://github.com/alienator88/pearcleaner/issues) - [X] OS Version: 26.4 B2 - [X] Pearcleaner Version: 5.4.3 --- ### Issue: Homebrew updates silently (at first, but later shows in console on additional runs) fail when the Xcode license hasn't been accepted. #### Steps: Have Xcode update itself in the background. Try to update casks and/or formulae. #### Screenshots: <img width="1003" height="769" alt="Image" src="https://github.com/user-attachments/assets/1755d841-b078-4b91-b3dd-349ed81f7cd5" /> <img width="653" height="179" alt="Image" src="https://github.com/user-attachments/assets/fdd7a4da-892c-4e71-8cfb-ab139cad501a" />