Message "DeprecationWarning: Buffer() is deprecated due to security and usability issues" when running createComment

Describe the bug I am getting the following message printing out in the Actions log when I run “github.rest.issues.createComment”.

(node:1609) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.

I noticed that this also happens for some other comamnds

To Reproduce Steps to reproduce the behavior:

1. Create a GitHub Action with `github.rest.issues.createComment({ … })
2. Go to ‘Actions’ tab and run the command
3. Click on the Action
4. Discover that the following message is printed out in the step

Expected behavior I don’t expect to see a message like that, as that actually portraits that the Action does not follow a safe guideline.

Screenshots If applicable, add screenshots to help explain your problem.

Additional context Add any other context about the problem here.

[mscdex]

I recently saw this and after a bit of digging the situation is currently this:

• github-script 5.0.0 depends on @octokit/core ^3.5.1
• @octokit/core 3.5.1 depends on @octokit/request ^5.6.0
• @octokit/request 5.6.2 depends on node-fetch ^2.6.1

This is the point where things break down. Basically the last node-fetch 2.x depends on a version of the whatwg-url module from 2017 that contains the new Buffer() usage. However, not only has whatwg-url since then removed their usage of new Buffer() but node-fetch versions post-2.x don’t even depend on whatwg-url anymore.

So I guess what needs to happen is @octokit/request should update their dependency on node-fetch.

[mscdex]

Actually it seems with the recent update of @octokit/request to v5.6.3 which bumped the node-fetch dependency to ^2.6.7, the deprecation message should no longer be happening.