Bump submodule.

diff --git a/static b/static
index 5dd23ed45d17b476ad77bc0f9267696ead0a0567..6b0cfec2ed2d769cdb5b6c3a827acbf02c89c979 160000 (submodule)
--- a/static
+++ b/static
@@ -1 +1 @@
-Subproject commit 5dd23ed45d17b476ad77bc0f9267696ead0a0567
+Subproject commit 6b0cfec2ed2d769cdb5b6c3a827acbf02c89c979