Migrate datetime.date.fromtimestamp to Argument Clinic (GH-8535)

diff --git a/Misc/ACKS b/Misc/ACKS
index 96563f6..272130f 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -672,6 +672,7 @@
 Joerg-Cyril Hoehle
 Gregor Hoffleit
 Chris Hoffman
+Tim Hoffmann
 Stefan Hoffmeister
 Albert Hofkamp
 Chris Hogan