Unpin Python version for builds

Author: m-aciek

.github/workflows/spellcheck.yml

@@ -26,7 +26,7 @@ jobs:
     steps:
       - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97  # v7.0.0
         with:
-          python-version: '3.12'
+          python-version: 3
       - uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d  # v10.0.1
       - name: Check out CPython documentation
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1