Update EMSDK to 5.0.0 (#479)

Emscripten 4.0.12 introduced breaking change by changing module factory
to always return promise even if `WASM_ASYNC_COMPILATION=0`. To overcome this, build emscripten compiler without MODULARIZE with custom export of `createRevive`.

js/emscripten/examples/node/revive.js

@@ -1,7 +1,7 @@
 const soljson = require("solc/soljson");
 const createRevive = require("./resolc.js");
 
-async function compile(standardJsonInput) {
+function compile(standardJsonInput) {
   if (!standardJsonInput) {
     throw new Error("Input JSON for the Solidity compiler is required.");
   }