Update workflow.yml

.github/workflows/workflow.yml

@@ -13,14 +13,15 @@ jobs:
     needs: [make]
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2022]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        os: [ubuntu-20.04, ubuntu-22.04, windows-2019, windows-2022, macos-12, macos-13, macos-14]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Git repository
         uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: ${{ matrix.python-version }}
       - name: Check pip installation
         run: |
           pip install https://api.github.com/repos/valab-certh/meddisc/tarball/main#subdirectory=python