Safe Settings do not update org Branch Protection Rulesets after created

## Problem Description
Branch Protection Rulesets not getting updated properly

Steps to reproduce:

1. create an org level ruleset with required reviewers present in ruleset.

2. Verify ruleset having required reviewers populated
3. Now go to safe settings file and review required reviewers and push changes to main branch

4. Verify ruleset is updated

### What is the expected behavior
Ruleset get updated, removed required reviewers condition
### Error output, if available
Ruleset do not get updated
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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