fix: add homebrew-test step

[jsjoeio]

WIP this is to test if I can get the homebrew brew bump-formula-pr working.

Fixes #

[github-actions]

✨ code-server docs for PR #5023 is ready! It will be updated on every commit.

• Host: https://coder.com/docs/code-server/f346523
• Last deploy status: success
• Commit: f9c3c3c
• Workflow status: https://github.com/coder/code-server/actions/runs/2030949634

[codecov]

Codecov Report

Merging #5023 (f9c3c3c) into main (ba1ddbd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #5023   +/-   ##
=======================================
  Coverage   71.30%   71.30%           
=======================================
  Files          30       30           
  Lines        1683     1683           
  Branches      373      373           
=======================================
  Hits         1200     1200           
  Misses        413      413           
  Partials       70       70           

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