Update Android.bp by running cargo_embargo am: 652963b707

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures-test/+/3080213

Change-Id: I30ebb8ed92e770127373b209718f07682921e647
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/Android.bp b/Android.bp
index c8a007f..cbb6a79 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,5 +1,7 @@
 // This file is generated by cargo_embargo.
-// Do not modify this file as changes will be overridden on upgrade.
+// Do not modify this file after the first "rust_*" or "genrule" module
+// because the changes will be overridden on upgrade.
+// Content before the first "rust_*" or "genrule" module is preserved.
 
 package {
     default_applicable_licenses: ["external_rust_crates_futures-test_license"],