Updates unison

diff --git a/modules/unison b/modules/unison
index 964473097cb0dd4a97787f65072e2896e0fd976a..7d39362886919be9bb3ce8196da30bfa1c6e3685 160000 (submodule)
--- a/modules/unison
+++ b/modules/unison
@@ -1 +1 @@
-Subproject commit 964473097cb0dd4a97787f65072e2896e0fd976a
+Subproject commit 7d39362886919be9bb3ce8196da30bfa1c6e3685