Add some more Rust dependencies

Needed for some third-party code I'm adding BUILD files for in future
changes, and also some upcoming code in AOS.

Change-Id: I1328d8a97930ce193d0e9b8b17ea6f63a92c0915
Signed-off-by: Brian Silverman <bsilver16384@gmail.com>
diff --git a/third_party/cargo/remote/BUILD.proc-macro2-1.0.40.bazel b/third_party/cargo/remote/BUILD.proc-macro2-1.0.40.bazel
index 72d4c9a..56b71b4 100644
--- a/third_party/cargo/remote/BUILD.proc-macro2-1.0.40.bazel
+++ b/third_party/cargo/remote/BUILD.proc-macro2-1.0.40.bazel
@@ -86,7 +86,7 @@
     # buildifier: leave-alone
     deps = [
         ":proc_macro2_build_script",
-        "@raze__unicode_ident__1_0_1//:unicode_ident",
+        "@raze__unicode_ident__1_0_2//:unicode_ident",
     ],
 )