pytype: suppress warnings about no 'open_binary' on importlib.resources

Fixes these pytype warnings:

    line 43, in <module>: No attribute 'open_binary' on module 'importlib.resources' [module-attr]
    line 47, in open_resource: No attribute 'open_binary' on module 'importlib.resources' [module-attr]

For some reason, I can't upgrade from 3.6.8 in my WSL environment.

Differential Revision: https://phab.mercurial-scm.org/D7681

mercurial/utils/resourceutil.py

@@ -40,11 +40,11 b' try:'
     import importlib
 
     # Force loading of the resources module
-    importlib.resources.open_binary
+    importlib.resources.open_binary  # pytype: disable=module-attr
 
     def open_resource(package, name):
         package = b'mercurial.' + package
-        return importlib.resources.open_binary(
+        return importlib.resources.open_binary(  # pytype: disable=module-attr
             pycompat.sysstr(package), pycompat.sysstr(name)
         )