unwinding: bump version to fix asm

With rust-lang#80608 the `unwinding` crate no longer builds. The upstream crate
has been updated to build by manually adding directives to the naked_asm
stream.

Bump the dependency in Rust to get this newer version. This fixes the
build for Xous, and closes rust-lang#134403.

Signed-off-by: Sean Cross <sean@xobs.io>

Author: xobs

Cargo.lock

@@ -22,7 +22,7 @@ cfg-if = "1.0"
 libc = { version = "0.2.140", features = ['rustc-dep-of-std'], default-features = false }
 
 [target.'cfg(target_os = "xous")'.dependencies]
-unwinding = { version = "0.2.3", features = ['rustc-dep-of-std', 'unwinder', 'fde-custom'], default-features = false }
+unwinding = { version = "0.2.5", features = ['rustc-dep-of-std', 'unwinder', 'fde-custom'], default-features = false }
 
 [features]