allow Python prereleases (for now)

Author: svlandeg

.github/workflows/test.yml

@@ -59,6 +59,7 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
       - name: Setup uv
         uses: astral-sh/setup-uv@v6
         with: