fix: issue in node-simple snippets where basic auth wasn't decoded

[erunion]

🧰 What's being changed?

This upgrades the node-simple code snippet generator to fix a couple issues, namely being that Basic auth wasn't being decoded for sdk.auth() calls.

With the fixes in the library:

Resolves https://github.com/readmeio/api-explorer/issues/832

🧪 Testing

You can test out basic auth with the auth-types definition.

📖 Release Notes

2.4.0 (2020-10-16)

• chore: test cleanup (Feature/api logs error #181) (1fe0e95), closes #181
• fix: adding support for non-alphanumerical operation ids (Fix problem where nested objects would appear empty #180) (fd075a0), closes #180
• fix: basic auth headers now decoded and exploded into .auth() calls (Fix issue where default values wouldn't be saved into the formData until edited #179) (2351b95), closes #179