adjust the workflow to ensure that Homebrew handles Python installations and symlinks correctly. Add a step to unlink any existing Python versions before installing the required version and explicitly link the newly installed version

Author: marvin-mangold

.github/workflows/osx-test-with-brew.yml

@@ -15,14 +15,16 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install snap7
-        run: brew install snap7 python@${{ matrix.python-version }}
+      - name: Unlink existing Python
+        run: brew unlink python@${{ matrix.python-version }} || true
+      - name: Install snap7 and Python
+        run: |
+          brew install snap7 python@${{ matrix.python-version }}
+          brew link --overwrite python@${{ matrix.python-version }}
       - name: Install python-snap7
         run: |
           python${{ matrix.python-version }} -m venv venv
           venv/bin/python3 -m pip install --upgrade pip setuptools
           venv/bin/python3 -m pip install -e .[test]
       - name: Run pytest
-        run: |
-          venv/bin/pytest -m "server or util or client or mainloop"
-          sudo venv/bin/pytest -m partner
+        run: |