bpo-30409: locale.getpreferredencoding doesn't return result (#1672)

diff --git a/Misc/ACKS b/Misc/ACKS
index 10b5d7c..b7b58a7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -904,6 +904,7 @@
 Pam McA'Nulty
 Matt McClure
 Rebecca McCreary
+Sean McCully
 Kirk McDonald
 Chris McDonough
 Greg McFarlane