CI: install portaudio

[hagenw]

To fix the tests under Mac and Ubuntu, we need to install portaudio, compare https://github.com/audeering/audinterface/actions/runs/11955509905/job/33328050030?pr=181.

Summary by Sourcery

CI:

• Add installation step for portaudio on MacOS in CI workflow to ensure compatibility with latest runner versions.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR adds a new step in the CI workflow to install the portaudio dependency specifically for macOS runners. The change is implemented by adding a conditional step in the GitHub Actions workflow that runs only on macOS environments.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added macOS-specific dependency installation in CI workflow	Added new 'Prepare Macos' step that installs portaudio using brew Added conditional execution for macOS using 'if matrix.os' condition	.github/workflows/test.yml

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[sourcery-ai]

Hey @hagenw - I've reviewed your changes and found some issues that need to be addressed.

Blocking issues:

• The if condition has incorrect syntax and is missing required expression syntax (link)

Overall Comments:

• The if condition needs to be corrected to if: ${{ matrix.os == 'macos-latest' }} to follow GitHub Actions syntax

Here's what I looked at during the review

• 🔴 General issues: 1 blocking issue
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.0%. Comparing base (a9bc048) to head (369fab5).

Additional details and impacted files

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