Bot both creates a PR and complains about no contributions when extra text in comment

[JoshuaKGoldberg]

Describe the bug

With a(n accidentally) specially crafted comment, I've tricked the bot into both creating a PR and saying in the same comment that it couldn't determine any contributions:

@JoshuaKGoldberg

I've put up a pull request to add @JoshuaKGoldberg! 🎉

I couldn't determine any contributions to add, did you specify any contributions? Please make sure to use valid contribution names.

JoshuaKGoldberg/create-typescript-app#429 (comment)

To Reproduce

Steps to reproduce the behavior:

1. Set up allcontributors in a new repo
2. Post a comment with content after the @all-contributors please add ... line

Expected behavior

The bot should ignore the extra content

Additional context

I posted some more comments on that PR. It looks like the bug might have something to do with text like all-contributors existing?

[dannogr]

Hello man, great job!

[github-actions]

🎉 This issue has been resolved in version 1.19.2 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀