Revert convert to esm (#544)

* Revert "update got dependency and convert to esm module (#533)"

This reverts commit 77efb36ae3.

* keep new local test file changes

* keep changes to PR template

* update changelog

integrationTests/e2e-tls/setup.js

@@ -1,5 +1,5 @@
-import got from 'got';
-import core from '@actions/core';
+const got = require('got');
+const core = require('@actions/core');
 
 const vaultUrl = `${process.env.VAULT_HOST}:${process.env.VAULT_PORT}`;
 const caCertificateRaw = `${process.env.VAULTCA}`;