Bump wasm-builder-runner

1.0 wasm-builder-runner is not compatible with 2.0 wasm-builder https://github.com/paritytech/substrate/pull/7283#issuecomment-705824314

runtime/Cargo.toml

@@ -11,7 +11,7 @@ version = '2.0.0'
 targets = ['x86_64-unknown-linux-gnu']
 
 [build-dependencies]
-wasm-builder-runner = { package = 'substrate-wasm-builder-runner', version = '1.0.5' }
+wasm-builder-runner = { package = 'substrate-wasm-builder-runner', version = '2.0.0' }
 
 # alias "parity-scale-code" to "codec"
 [dependencies.codec]