Update gnuv2_demangle to 0.4 (#280)

Author: AngheloAlf

Cargo.lock

@@ -179,7 +179,7 @@ encoding_rs = { version = "0.8.35", optional = true }
 # demangler
 cpp_demangle = { version = "0.4", optional = true, default-features = false, features = ["alloc"] }
 cwdemangle = { version = "1.0", optional = true }
-gnuv2_demangle = { version = "0.3", optional = true }
+gnuv2_demangle = { version = "0.4", optional = true }
 msvc-demangler = { version = "0.11", optional = true }
 
 [target.'cfg(windows)'.dependencies]