bpo-42345: Fix three issues with typing.Literal parameters (GH-23294)



Literal equality no longer depends on the order of arguments.

Fix issue related to `typing.Literal` caching by adding `typed` parameter to `typing._tp_cache` function.

Add deduplication of `typing.Literal` arguments.
diff --git a/Misc/ACKS b/Misc/ACKS
index 35a87ae..1d10614 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -861,6 +861,7 @@
 Rafe Kaplan
 Jacob Kaplan-Moss
 Allison Kaptur
+Yurii Karabas
 Janne Karila
 Per Øyvind Karlsen
 Anton Kasyanov