Update 'sweep' submodule

diff --git a/sweep b/sweep
index 84e79a916318852ee6c00701a081065c01497e41..118f21e39f1f1503b79f6b9e6035e533c25a9ed3 160000 (submodule)
--- a/sweep
+++ b/sweep
@@ -1 +1 @@
-Subproject commit 84e79a916318852ee6c00701a081065c01497e41
+Subproject commit 118f21e39f1f1503b79f6b9e6035e533c25a9ed3