catch error in fall back to utf8

[archvlad]

To reproduce error fetch big file and then read body of the response. You will receive the error but you won't be able to catch it with try-catch.

import got from "got";

try {
  const res = await got("https://mp4-download.com/8k-5-MP4");
  console.log(res.body);
} catch (error) {
  console.log("Catch error:", error.message);
}

So what I add is try-catch block to response.rawBody.toString() as it is in parseBody method from got\dist\source\core\response.js

Checklist

• I have read the documentation.
• I have included a pull request description of my changes.
• I have included some tests.
• If it's a new feature, I have included documentation updates in both the README and the types.

[sindresorhus]

This needs a test.

[archvlad]

The problem occurred when I get a body larger than 512MB, causing Buffer.toString() to throw an error. So, I added test that creates buffer with size 512 MB and then sends it to the client.

[archvlad]

Thank you for accepting my PR. I have little experience in participating in open source, so this is very valuable to me.