Upgrade rust/crates/tokio-test to 0.4.1

Test: make
Change-Id: I82bcd74a0e87533697d4834e6bae93db554f9b06
diff --git a/METADATA b/METADATA
index 5d9ec54..22032a7 100644
--- a/METADATA
+++ b/METADATA
@@ -7,13 +7,13 @@
   }
   url {
     type: ARCHIVE
-    value: "https://static.crates.io/crates/tokio-test/tokio-test-0.4.0.crate"
+    value: "https://static.crates.io/crates/tokio-test/tokio-test-0.4.1.crate"
   }
-  version: "0.4.0"
+  version: "0.4.1"
   license_type: NOTICE
   last_upgrade_date {
     year: 2021
-    month: 2
-    day: 8
+    month: 4
+    day: 2
   }
 }