Improve bot error messaging on invalid commitType config (Example inside)

**Describe the bug**
When fed a valid request, the bot says it is unable to process the request:

https://github.com/trussworks/react-uswds/pull/2618#issuecomment-1768572938

This was due to the repository config using a commitType that also included a scope. Reverting the scope fixed the issue:


https://github.com/trussworks/react-uswds/pull/2653#issuecomment-1810802029

**To Reproduce**
Steps to reproduce the behavior:

1. Create a repo with an all contributors config file that includes commitType: "chore(someScope)"
2. Try to use the bot
3. Note that it fails. The error sounds like it is network, API, or all-contributors code related. I suspect since it works for others (presumably) that there is actually an issue with our repo or configuration. Note that the bot used to work in this repo.

**Expected behavior**
The bot should properly create the contributor PR

OR

The bot should indicate what the problem is, in this case, specifically handling an error that I assume bubbles up from https://github.com/Berkmann18/commit-conv

**Additional**

Opened an issue with [commit-conv](https://github.com/Berkmann18/commit-conv): https://github.com/Berkmann18/commit-conv/issues/35 to allow scope.