bpo-30822: Fix testing of datetime module. (#2530) (#2783)

Only C implementation was tested.
diff --git a/Misc/ACKS b/Misc/ACKS
index 3455c1b..3385269 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1602,6 +1602,7 @@
 Eren Türkay
 Lionel Ulmer
 Adnan Umer
+Utkarsh Upadhyay
 Roger Upole
 Daniel Urban
 Michael Urman