Add handling of long PR comments

[denis256]

Description

Updated GitHub action to handle long PR comments.

Fixes #71.

Example output:

However, long outputs may be rejected by Github:

{
  "message": "Validation Failed",
  "errors": [
    {
      "resource": "IssueComment",
      "code": "unprocessable",
      "field": "data",
      "message": "Body is too long (maximum is 65536 characters)"
    }
  ],
  "documentation_url": "https://docs.github.com/rest/issues/comments#create-an-issue-comment"
}

Release Notes (draft)

Added / Removed / Updated [X].

Updated action comment flow to handle long comments

Migration Guide

N/A

[levkohimins]

LGTM!