try to use brew version of python

Author: umbynos

.github/workflows/release.yml

@@ -62,10 +62,15 @@ jobs:
         run: git apply -v "${{ env.IMGTOOL_PACKING_PATH }}/patches/"*
 
       - name: Set up Python ${{ env.PYTHON_VERSION }}
+        if: matrix.os != 'macos-10.15'
         uses: actions/setup-python@v3
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: ${{ matrix.python_arch }}
+        
+      - name: Set up Python ${{ env.PYTHON_VERSION }} on macOS 
+        if: matrix.os == 'macos-10.15'
+        run: brew install python@${{ env.PYTHON_VERSION }}
 
       - name: Upgrade PIP
         run: python -m pip install --upgrade pip setuptools wheel