Fix gz-sim10 bottle broken by libwebsockets bump

[scpeters]

Please supply your brew configuration:

Brew configuration

$ brew config

Brew linkage test result

https://build.osrfoundation.org/job/gz_sim10-install_bottle-homebrew-amd64/404/

09:08:47 + brew linkage --test gz-sim10
09:08:49 Broken dependencies:
09:08:49   /usr/local/opt/libwebsockets/lib/libwebsockets.20.dylib (libwebsockets)

Checklist

• Identify change in homebrew-core that broke the bottle
  • libwebsockets 4.5.0 Homebrew/homebrew-core#256449
• Identify list of affected formulae
  • gz-sim10
• Remove broken bottles: for each affected formula, run brew bump-revision --remove-bottle-block
  • https://build.osrfoundation.org/job/generic-release-homebrew_remove_dependent_bottles/8/
  • Remove bottles for gz-sim10 and dependents #3271
• Rebuild broken bottles
  • [ ]