Add a test to check on the minimal macos wheels, since we build on ne…

…wer versions

To investigate macos-11 issue.

.github/workflows/build.yml

@@ -116,6 +116,30 @@ jobs:
           name: wheels-${{ matrix.os }}-${{ strategy.job-index }}
           path: ./wheelhouse/*.whl
 
+  test_minimum_macos:
+    needs: [wheels_macos]
+    name: macos-11
+    runs-on: macos-11
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        name: Install Python
+        with:
+          python-version: "3.8"
+
+      - name: Donwload x86_64 wheels
+        uses: actions/download-artifact@v4
+        with:
+          name: wheels-macos-13  # download wheels produced by macos-13, the intel runner
+          path: wheelhouse
+          merge-multiple: true
+
+      - name: Install wheels
+        run: |
+          python -m pip install wheelhouse/pikepdf*py38*.whl
+          python -c "import pikepdf; print(pikepdf.__version__)"
+
   wheels_windows:
     name: ${{ matrix.platform }}
     runs-on: ${{ matrix.os }}