Log Message:
py-anyio: update to 4.6.0.

Dropped support for Python 3.8 (as #698 cannot be resolved without cancel \ 
message support)
Fixed 100% CPU use on asyncio while waiting for an exiting task group to finish \ 
while said task group is within a cancelled cancel scope (#695)
Fixed cancel scopes on asyncio not propagating CancelledError on exit when the \ 
enclosing cancel scope has been effectively cancelled (#698)
Fixed asyncio task groups not yielding control to the event loop at exit if \ 
there were no child tasks to wait on
Fixed inconsistent task uncancellation with asyncio cancel scopes belonging to a \ 
task group when said task group has child tasks running