- Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely.

Patch from Nicola Palumbo and Laurent De Buyst.
diff --git a/Misc/ACKS b/Misc/ACKS
index b377050..63cf4da 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1533,3 +1533,5 @@
 Gennadiy Zlobin
 Doug Zongker
 Peter Åstrand
+Laurent De Buyst
+Nicola Palumbo