Bump sphinx from 5.3 to 7.0

Author: p1c2u

docs/conf.py

@@ -72,7 +72,6 @@
     },
     "repo_url": "https://github.com/python-openapi/openapi-core/",
     "repo_name": "openapi-core",
-    "repo_type": "github",
     "icon": {
         "repo": "fontawesome/brands/github-alt",
         "edit": "material/file-edit-outline",