Bump CUB for signed compare regression fix.

alliepiper · alliepiper · commit bec219d15c5d · 2020-03-16T11:45:22.000-04:00
diff --git a/dependencies/cub b/dependencies/cub
@@ -1 +1 @@
-Subproject commit 367ad9a043857f26eeeccca0ef3ca0954d2916e2
+Subproject commit ff56e892d06161fd70f93b387e7d1bb5039e16bb
