Backport PR #1868: Revert "(fix): bound sphinx due to autodoc incompat" (#1871)

Co-authored-by: Philipp A <flying-sheep@web.de>

Author: meeseeksmachine

pyproject.toml

@@ -64,9 +64,7 @@ dev = [
     "anndata[dev-doc,dev-test]",
 ]
 doc = [
-    # https://github.com/tox-dev/sphinx-autodoc-typehints/issues/523
-    # means autodoc-typehints is incompatible with sphinx 8.2.0
-    "sphinx>=7.4.6,<8.2.0",
+    "sphinx>=8.2.1",
     "sphinx-book-theme>=1.1.0",
     "sphinx-autodoc-typehints>=2.2.0",
     "sphinx-issues",