The "Safe-setting validator" in some cases hangs on the PR

## Problem Description

The "Safe-setting validator" in some cases hangs on the PR and never finishes.

### What is actually happening

Currently the "Safe-setting validator" has the following messages:

- Safe-setting validator
Started 1d 2h 55m 57s ago
- Starting NOP
initiating...

At the same time, on the GitHub App, on the advanced tab, there is a "check_run" request with the response "500". The error message is below.

### What is the expected behavior

The validator has to respond properly and return the appropriate error message

### Error output, if available

AggregateError:
TypeError: Cannot convert undefined or null to object
at Function.keys ()
at Settings.getSubOrgConfig (/opt/safe-settings/lib/settings.js:264:28)
at Settings.updateRepos (/opt/safe-settings/lib/settings.js:196:31)
at runMicrotasks ()
at runNextTicks (node:internal/process/task_queues:61:5)
at listOnTimeout (node:internal/timers:528:9)
at processTimers (node:internal/timers:502:7)
at async Promise.all (index 3)
at async Function.syncSubOrgs (/opt/safe-settings/lib/settings.js:21:5)
at async Promise.all (index 0)

```

```

## Context

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

- We are running our own instance of the Safe-Settings app

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

- We are utilizing it with github.com

#### Version of settings

"version": "0.1.0-rc.26"(In the package.json file)

#### Version of GitHub Enterprise

- N/A