[emacs] Update proof-site to v4.4-226-g7389d438, tweak defer delays

[~bandali/configs] / lib / proof-site

diff --git a/lib/proof-site b/lib/proof-site
index f7cc8f1..7389d43 160000 (submodule)
--- a/lib/proof-site
+++ b/lib/proof-site
@@ -1 +1 @@
-Subproject commit f7cc8f1f76baf5e517e51f1db47510ed605064e8
+Subproject commit 7389d43893569ff0e1eff892254901876fc8225e