Use protobuf 2.x instead of 3.x

Bug: 270895633
Test: build
Change-Id: Id52bdc89ff223a4a0f538ca4fddae5359256a9f1
diff --git a/compos/Android.bp b/compos/Android.bp
index 2f6be98..c120b0f 100644
--- a/compos/Android.bp
+++ b/compos/Android.bp
@@ -18,7 +18,7 @@
         "libminijail_rust",
         "libnix",
         "libodsign_proto_rust",
-        "libprotobuf",
+        "libprotobuf_deprecated",
         "libregex",
         "librpcbinder_rs",
         "librustutils",