ci: add MacOS to matrix testing and bump action versions

Author: joanise

.github/workflows/matrix-tests.yml

@@ -10,16 +10,19 @@ on:
 jobs:
   test:
     strategy:
+      fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest]
-        # Matrix test with Python 3.8+, but skip 3.9 since it is exercised in tests.yml
-        python-version: ["3.8", "3.10", "3.11", "3.12", "3.13"]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: FedericoCarboni/setup-ffmpeg@v2
+        if : runner.os != 'macOS'
+      - run: brew install ffmpeg
+        if : runner.os == 'macOS'
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install Python dependencies