Revert "Change workflow to not use matrix as this was making 3.10 run…

… twice"

This reverts commit a250851.

.github/workflows/pipeline.yml

@@ -27,17 +27,16 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python
+    - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
-        python-version: |
-          3.9
-          3.10
-          3.11
-          3.12
-          3.13
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip