Remove matrix strategy

.github/workflows/test.yml

@@ -7,21 +7,17 @@ on: [push, pull_request, workflow_dispatch]
 
 jobs:
   test:
-    strategy:
-      matrix:
-        python: ['3.12']
-        platform: [flyci-macos-14-m2]
     runs-on: flyci-macos-14-m2
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Set up Python ${{ matrix.python }}
+      - name: Set up Python 3.12
         uses: actions/setup-python@v3
         with:
-          python-version: ${{ matrix.python }}
+          python-version: 3.12
       - name: Install test dependencies
         run: python -m pip install --upgrade nox
       - name: Test
-        run: python -m nox -s tests-${{ matrix.python }}
+        run: python -m nox -s tests-3.12
       - name: Lint
         run: python -m nox -s lint