Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I15944e009755ad1a89651b61141cb92641a7318f
diff --git a/Android.bp b/Android.bp
index ca7a7fe..41dbfdd 100644
--- a/Android.bp
+++ b/Android.bp
@@ -45,7 +45,7 @@
     crate_name: "indexmap",
     cargo_env_compat: true,
     cargo_pkg_version: "1.9.2",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "serde",