Fix macOS cmake installation conflict in GitHub Actions

[astomodynamics]

Summary

• Fix cmake installation error on macOS in GitHub Actions CI
• Resolves conflict between different homebrew taps

Problem

The macOS CI was failing with:

Error: cmake was installed from the local/pinned tap
but you are trying to install it from the homebrew/core tap.

Solution

• Uninstall any existing cmake installation before reinstalling
• Use --ignore-dependencies flag to avoid removing dependent packages
• Add || true to ensure workflow continues even if commands fail

[gemini-code-assist]

Note

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