Use release version of Python 3.13 for doctest

.github/workflows/reusable-docs.yml

@@ -99,20 +99,25 @@ jobs:
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/cache@v4
+    - name: 'Set up Python'
+      uses: actions/setup-python@v5
       with:
-        path: ~/.cache/pip
-        key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
-        restore-keys: |
-          ubuntu-doc-
-    - name: 'Install Dependencies'
-      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
-    - name: 'Configure CPython'
-      run: ./configure --with-pydebug
-    - name: 'Build CPython'
-      run: make -j4
+        python-version: '3.13'
+        allow-prereleases: true
+#    - uses: actions/cache@v4
+#      with:
+#        path: ~/.cache/pip
+#        key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
+#        restore-keys: |
+#          ubuntu-doc-
+#    - name: 'Install Dependencies'
+#      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
+#    - name: 'Configure CPython'
+#      run: ./configure --with-pydebug
+#    - name: 'Build CPython'
+#      run: make -j4
     - name: 'Install build dependencies'
-      run: make -C Doc/ PYTHON=../python venv
+      run: make -C Doc/ PYTHON=python3 venv
     # Use "xvfb-run" since some doctest tests open GUI windows
     - name: 'Run documentation doctest'
       run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="-W --keep-going" doctest