docs: Update Python stdlib objects inventory URL

Author: pawamoy

mkdocs.yml

@@ -218,8 +218,7 @@ plugins:
     handlers:
       python:
         inventories:
-        # YORE: BOL 3.13: Replace `3.13` with `3` within line.
-        - url: https://docs.python.org/3.13/objects.inv
+        - url: https://docs.python.org/3/objects.inv
           domains: [std, py]
         - https://typing-extensions.readthedocs.io/en/latest/objects.inv
         paths: [src, scripts, .]