exception: Narrow down specific header

We can use the <exception> header instead of pulling in all of the
exception-style classes.

src/shader_recompiler/exception.h

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include <stdexcept>
+#include <exception>
 #include <string>
 #include <string_view>
 #include <utility>