Update Android.bp by running cargo_embargo am: 7612cfe216

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/heck/+/3095618

Change-Id: I4231046f19e3792c584bfa48f7029c55dd981b84
Signed-off-by: Automerger Merge Worker <[email protected]>
diff --git a/Android.bp b/Android.bp
index 7ba8d99..45ae196 100644
--- a/Android.bp
+++ b/Android.bp
@@ -45,7 +45,7 @@
     crate_name: "heck",
     cargo_env_compat: true,
     cargo_pkg_version: "0.4.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
@@ -65,7 +65,7 @@
     crate_name: "heck",
     cargo_env_compat: true,
     cargo_pkg_version: "0.4.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     features: [
         "unicode",