How to troubleshoot degraded_webhook.go x509: certificate signed by unknown authority messages in OCP 4?

Solution Unverified - Updated 2023-11-06T18:29:29+00:00 -

Issue

The error message "degraded_webhook.go:128] x509: certificate signed by unknown authority" is shown repeatedly in the kube-apiserver-operator logs. The error is shown twice in about a second each time it appears:
```
E0101 00:00:01.128799       1 degraded_webhook.go:128] x509: certificate signed by unknown authority
E0101 00:00:02.135928       1 degraded_webhook.go:128] x509: certificate signed by unknown authority
```

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