No sphinx 9 in tests

Author: choldgraf

.github/workflows/tests.yml

@@ -30,10 +30,10 @@ jobs:
         os: [ubuntu-latest]
         python-version: ["3.11", "3.12", "3.13"]
         # Test last 2 major releases of Sphinx; regression fixtures target the latest.
-        sphinx: ["~=8.0", "~=9.0"]
+        sphinx: ["~=7.0", "~=8.0"]
         include:
         - os: windows-latest
-          python-version: 3.11
+          python-version: 3.13
           # Windows pulling in dependencies fails
           experimental: true
         - os: macos-latest
@@ -79,7 +79,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.13'
         cache: "pip"
         cache-dependency-path: "pyproject.toml"
     - name: Install fonts