Update Substrate, Polkadot and switch to wasm-builder

test/runtime/src/lib.rs

@@ -18,6 +18,10 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+
 pub use substrate_test_runtime::*;
 
 runtime::register_validate_block!(Block, system::BlockExecutor);