feat: issue a combined PR comment for all releases

[niieani]

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes #2285 🦕

Addresses both the issue of multiple comments, as well as formatting the URLs in the comment.