Repo Creation fails with Multiple files in same commit

## Problem Description
Repo Creation fails with Multiple files in same commit
### What is actually happening
if user is coming new repo file with force_create and having changes in any other file as well like settings.yml, repo creation is not happening

### What is the expected behavior
Repo should get created
### Error output, if available

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## Context

### Are you using the hosted instance of probot/settings or running your own?

### If running your own instance, are you using it with github.com or GitHub Enterprise?

#### Version of probot/settings

#### Version of GitHub Enterprise