[doc] Add license_url for python-docs-theme 2022.1. (GH-30527)

Doc/conf.py

@@ -69,7 +69,8 @@
 html_theme_path = ['tools']
 html_theme_options = {
     'collapsiblesidebar': True,
-    'issues_url': 'https://docs.python.org/3/bugs.html',
+    'issues_url': '/bugs.html',
+    'license_url': '/license.html',
     'root_include_title': False   # We use the version switcher instead.
 }
 

Doc/requirements.txt

@@ -9,4 +9,4 @@ blurb
 
 # The theme used by the documentation is stored separately, so we need
 # to install that as well.
-python-docs-theme
+python-docs-theme>=2022.1