Closes bpo-28281: Remove year (1-9999) limits on the weekday() function. (#4109)

Patch by Mark Gollahon.
diff --git a/Misc/ACKS b/Misc/ACKS
index 7b174c6..ac7a258 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -545,6 +545,7 @@
 Jeroen Van Goey
 Christoph Gohlke
 Tim Golden
+Mark Gollahon
 Guilherme Gonçalves
 Tiago Gonçalves
 Chris Gonnerman