Update cargo

diff --git a/src/tools/cargo b/src/tools/cargo
index d62dcd6af4ab4c43816b3d0659055f042a3d7061..6f3e9c367abb497c64f360c3839dab5e74928d5c 160000 (submodule)
--- a/src/tools/cargo
+++ b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit d62dcd6af4ab4c43816b3d0659055f042a3d7061
+Subproject commit 6f3e9c367abb497c64f360c3839dab5e74928d5c