Upgrade Furo docs theme to stable version

The previous version produced white flash changing page in dark theme.

https://github.com/pradyunsg/furo/discussions/230

(at least on my laptop - the problem might be compound with some
extension, because others couldn't reproduce the issue, and Furo author
says it only happened on long pages for them).

diff --git a/psycopg/setup.py b/psycopg/setup.py
index 2f689a169e20f92de2d089449080886de8961494..50a348e7de8fcfd4b7fc5b269f04b29c184f5b01 100644 (file)
--- a/psycopg/setup.py
+++ b/psycopg/setup.py
@@ -56,7 +56,7 @@ extras_require = {
         "Sphinx >= 4.1, < 4.2",
         "dnspython >= 2.1.0",  # to become a package dependency
         "docutils >= 0.17, < 0.18",
-        "furo >= furo-2021.8.17b43",
+        "furo >= furo-2021.8.31",
         "sphinx-autobuild >= 2021.3.14",
         "sphinx-autodoc-typehints >= 1.12, < 1.13",
     ],