Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Ie12af9d60be36ddbb952c7ac33f74693e457e27b
diff --git a/Android.bp b/Android.bp
index 891bb86..579b60b 100644
--- a/Android.bp
+++ b/Android.bp
@@ -9,7 +9,7 @@
     crate_name: "predicates_tree",
     cargo_env_compat: true,
     cargo_pkg_version: "1.0.9",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     rustlibs: [
         "libpredicates_core",