CI: run tests on windows-11-arm

force x64 Python still since installing our deps still fails
for arm64 there

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-24.04, windows-2025]
+        os: [ubuntu-24.04, windows-2025, windows-11-arm]
         python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
@@ -23,6 +23,7 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+        architecture: 'x64'
   
     - name: Install dependencies
       run: |