bpo-39815: add cached_property to all (GH-18726)



Automerge-Triggered-By: @pablogsal
diff --git a/Misc/ACKS b/Misc/ACKS
index b36e2de..5ec93a4 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -369,6 +369,7 @@
 Antonio Cuni
 Brian Curtin
 Jason Curtis
+Hakan Celik
 Paul Dagnelie
 Lisandro Dalcin
 Darren Dale