update workflow

Author: nghia-vo

.github/workflows/discorpy_ga.yml

@@ -27,6 +27,9 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         python-version: ["3.8", "3.9", "3.10", "3.11" ]
+        exclude:
+          - os: macos-latest
+            python-version: "3.8"
 
     steps:
     - uses: actions/checkout@v4
@@ -35,10 +38,6 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install build essentials on macOS with Python 3.8 only
-      if: runner.os == 'macOS' && matrix.python-version == '3.8'
-      run: python -m pip install setuptools==51.0.0 wheel
-
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip