Upgrade wasm builder (#10226)

* add TypeInfo for DispatchTime

* upgrade wasm-builder to Rust 2021

* remove resolver

* revert resolver in virtual workspace

substrate/utils/wasm-builder/src/prerequisites.rs

@@ -58,7 +58,7 @@ fn create_check_toolchain_project(project_dir: &Path) {
 			[package]
 			name = "wasm-test"
 			version = "1.0.0"
-			edition = "2018"
+			edition = "2021"
 			build = "build.rs"
 
 			[lib]

substrate/utils/wasm-builder/src/wasm_project.rs

@@ -266,8 +266,7 @@ fn create_project_cargo_toml(
 	let mut package = Table::new();
 	package.insert("name".into(), format!("{}-wasm", crate_name).into());
 	package.insert("version".into(), "1.0.0".into());
-	package.insert("edition".into(), "2018".into());
-	package.insert("resolver".into(), "2".into());
+	package.insert("edition".into(), "2021".into());
 
 	wasm_workspace_toml.insert("package".into(), package.into());