End build when wasm-builder does not find a prerequisite (#3030)

* End build when `wasm-builder` does not find a prerequisite

Using `compile_error!` was a stupid idea by me, as rust would not
re-execute the build.rs.

* Increment the `wasm-builder` version

* Update core/utils/wasm-builder/src/lib.rs

Co-Authored-By: André Silva <andre.beat@gmail.com>

substrate/core/executor/runtime-test/build.rs

@@ -21,7 +21,7 @@ fn main() {
 		"wasm_binary.rs",
 		WasmBuilderSource::CratesOrPath {
 			path: "../../utils/wasm-builder",
-			version: "1.0.2",
+			version: "1.0.3",
 		},
 	);
 }