[IMP] conf.py, requirements.txt, *: allow building with Python 3.10

- Bump Sphinx version to 4.3.2 (default for Debian Jammy).
- Remove the retrocompatibility for Sphinx < 3.5 (warnings are raised in
  4.5).
- Fix translator issue crashing builds.
- Unpin jinja2 from the requirements as the base issue is solved in sphinx 4

Task - 2898477

Part-of: odoo/documentation#2455

extensions/autodoc_field/__init__.py

@@ -114,11 +114,11 @@ class FieldDocumenter(AttributeDocumenter):
                 self.add_line(line, source_name)
         self.add_line('', source_name)
 
-    def get_doc(self, encoding=None, ignore=None):
+    def get_doc(self, *args, **kwargs):
         # only read docstring of field instance, do not fallback on field class
         field = self.object
         field.__doc__ = field.__dict__.get('__doc__', "")
-        res = super().get_doc(encoding, ignore)
+        res = super().get_doc(*args, **kwargs)
         return res
 
 

extensions/odoo_theme/translator.py

@@ -1,13 +1,9 @@
 # -*- coding: utf-8 -*-
-import os.path
-import posixpath
-import re
 
 from docutils import nodes
-from sphinx import addnodes, util, builders
 from sphinx.locale import admonitionlabels
 from sphinx.writers.html5 import HTML5Translator
-#from urllib.request import url2pathname
+
 
 # Translators inheritance chain:
 # Docutils Base HTML translator: https://sourceforge.net/p/docutils/code/HEAD/tree/trunk/docutils/docutils/writers/_html_base.py
@@ -56,7 +52,6 @@ class BootstrapTranslator(HTML5Translator):
     html_title = 'html_title'
     html_subtitle = 'html_subtitle'
 
-
     def __init__(self, builder, *args, **kwds):
         super().__init__(builder, *args, **kwds)
 
@@ -150,7 +145,8 @@ class BootstrapTranslator(HTML5Translator):
         # type: (nodes.Node) -> None
         self.generate_targets_for_table(node)
 
-        self._table_row_index = 0
+        # c/p of https://github.com/pydata/pydata-sphinx-theme/pull/509/files
+        self._table_row_indices.append(0)
 
         classes = [cls.strip(u' \t\n')
                    for cls in self.settings.table_style.split(',')]