ci : remove brew installation of cmake for macos-latest (#3408)
This commit remove the brew install of cmake for macos-latest
as this now seems to be pre-installed on the runner.
The motivation for this is that this job is failing with the following
error:
```console
Error: cmake was installed from the local/pinned tap
but you are trying to install it from the homebrew/core tap.
Formulae with the same name from different taps cannot be installed at the same time.
```
overview / pkg / ggml / sources / whisper.cpp / commit