Update source for Rust 1.63.0

Test: m rust
Bug: 241303140
Change-Id: I3b4d8c1c3101941258e366279bfd2a4a3ab1b948
diff --git a/diced/open_dice_cbor/lib.rs b/diced/open_dice_cbor/lib.rs
index 2859a61..ffb8a48 100644
--- a/diced/open_dice_cbor/lib.rs
+++ b/diced/open_dice_cbor/lib.rs
@@ -74,7 +74,7 @@
 pub const SIGNATURE_SIZE: usize = DICE_SIGNATURE_SIZE as usize;
 
 /// Open dice wrapper error type.
-#[derive(Debug, thiserror::Error, PartialEq)]
+#[derive(Debug, thiserror::Error, PartialEq, Eq)]
 pub enum Error {
     /// The libopen-dice backend reported InvalidInput.
     #[error("Open dice backend: Invalid input")]