Update to rustc-demangle 0.1.18

Author: varkor

std/Cargo.toml

@@ -24,7 +24,7 @@ hashbrown = { version = "0.9.0", default-features = false, features = ['rustc-de
 
 # Dependencies of the `backtrace` crate
 addr2line = { version = "0.13.0", optional = true, default-features = false }
-rustc-demangle = { version = "0.1.17", features = ['rustc-dep-of-std'] }
+rustc-demangle = { version = "0.1.18", features = ['rustc-dep-of-std'] }
 miniz_oxide = { version = "0.4.0", optional = true, default-features = false }
 [dependencies.object]
 version = "0.20"