Support Sphinx 7.x

Author: mr-c

docs/requirements-docs.txt

@@ -1,2 +1,2 @@
-sphinx>=4.2.0,<5.0.0
+sphinx>=5.1.0
 furo>=2022.3.4

docs/source/html_builder.py

@@ -9,11 +9,11 @@
 from sphinx.addnodes import document
 from sphinx.application import Sphinx
 from sphinx.builders.html import StandaloneHTMLBuilder
-
+from sphinx.environment import BuildEnvironment
 
 class MypyHTMLBuilder(StandaloneHTMLBuilder):
-    def __init__(self, app: Sphinx) -> None:
-        super().__init__(app)
+    def __init__(self, app: Sphinx, env: BuildEnvironment) -> None:
+        super().__init__(app, env)
         self._ref_to_doc = {}
 
     def write_doc(self, docname: str, doctree: document) -> None: