Run unit tests on Windows as well.

.github/workflows/test-unit.yml

@@ -8,10 +8,14 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-python@v4
+    - name: Set up Python      
+      uses: actions/setup-python@v4
       with:
         python-version: '3.10'
     - name: Install requirements