override lto setting

cargo-show-asm relies on --emit to tell it which file was generated,
In rustc past rust-lang/rust#103610 this no
longer works even with -Ccodegen-units=1

This should not affect c-s-a's output since it wasn't looking at
linker's optimization but might affect how compiled program performs.

src/main.rs

@@ -103,6 +103,7 @@ fn spawn_cargo(
         .args(["--emit", syntax.emit()])
         // So only one file gets created.
         .arg("-Ccodegen-units=1")
+        .arg("-Clto=no")
         .args(syntax.format().iter().flat_map(|s| ["-C", s]))
         .args(target_cpu.iter().map(|cpu| format!("-Ctarget-cpu={cpu}")));