Fix new CI failure

[rebello95]

Although the fix in #228 passed CI on the PR, it failed on main. As far as I can tell, it seems to be inconsistent depending on which GitHub runner gets assigned to the job. After further experimentation and digging, it looks like colima had some breaking changes from 0.5.x -> 0.6.x which require colima delete to be run prior to starting. The changes in this PR address the issue, and I've re-run CI multiple times on this PR to try on multiple runners.

Thankfully, we'll be able to axe this setup once we switch to the new conformance runner.

Error:

==> Pouring python@3.12--3.12.0_1.ventura.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink bin/python3.12
Target /usr/local/bin/python3.12
already exists. You may want to remove it:
  rm '/usr/local/bin/python3.12'