update sphinx requirements

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
-        python-version: '3.8'
+        python-version: '3.9'
 
     - name: Install dependencies
       run: pip install virtualenv tox

docs/conf.py

@@ -1,30 +1,13 @@
 # -*- coding: utf-8 -*-
 #
-# Supvisors documentation build configuration file, created by
-# sphinx-quickstart on Thu Jan  5 17:54:55 2017.
-#
-# This file is execfile()d with the current directory set to its
-# containing dir.
-#
-# Note that not all possible configuration values are present in this
-# autogenerated file.
-#
-# All configuration values have a default; values that are commented out
-# serve to show the default.
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-#
+# Supvisors documentation build configuration file
 
 import os
 import sys
 from datetime import date
 
 # -- General configuration ------------------------------------------------
 
-# needs_sphinx = '1.0'
-
 # Sphinx extension module names
 extensions = ['sphinx.ext.autodoc', 'myst_parser']