Update cargo

diff --git a/src/tools/cargo b/src/tools/cargo
index 39ad1039d9e3e1746177bf5d134af4c164f95528..38472bc19f2f76e245eba54a6e97ee6821b3c1db 160000 (submodule)
--- a/src/tools/cargo
+++ b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit 39ad1039d9e3e1746177bf5d134af4c164f95528
+Subproject commit 38472bc19f2f76e245eba54a6e97ee6821b3c1db