Update 'sweep' submodule

diff --git a/sweep b/sweep
index 44c46715073457ed95a013b870cfd914db03fae1..7afb48b4da782aab03bdd3ddefb6c28865d3d10b 160000 (submodule)
--- a/sweep
+++ b/sweep
@@ -1 +1 @@
-Subproject commit 44c46715073457ed95a013b870cfd914db03fae1
+Subproject commit 7afb48b4da782aab03bdd3ddefb6c28865d3d10b