Pin Sphinx below 9 for docs

tobiasraabe · tobiasraabe · commit 74748f2c63e2 · 2026-01-31T23:27:39.000+01:00
diff --git a/pyproject.toml b/pyproject.toml
@@ -33,7 +33,7 @@ docs = [
     "matplotlib",
     "myst-parser",
     "nbsphinx",
-    "sphinx",
+    "sphinx<9",
     "sphinx-autobuild",
     "sphinx-click",
     "sphinx-copybutton",
