Add a Cargo.lock to clippy

diff --git a/src/tools/clippy b/src/tools/clippy
index 7cdaeae1b877ca03b26ccb9b82754b826b03da5d..4402bc70a3b175c38994bbc802bee41ddc59165b 160000 (submodule)
--- a/src/tools/clippy
+++ b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit 7cdaeae1b877ca03b26ccb9b82754b826b03da5d
+Subproject commit 4402bc70a3b175c38994bbc802bee41ddc59165b