SSH Keys not able to be accessed by the 1Password CLI
When fetching a SSH key via op item get, it reveals the category value as SSH_KEY
```
op item get 'redacted' --vault personal
ID: redacted
Title: redacted
Vault: Personal (redacted)
Created: 19 minutes ago
Updated: 19 minutes ago by redacted
Favorite: false
Version: 1
Category: SSH_KEY
```
Yet trying to list by that category returns failure:
```
op item list --categories SSH_KEY
[ERROR] 2022/04/28 13:47:56 Unknown item category SSH_KEY
```
1Password Version: 8.7.0
Extension Version: Not Provided
OS Version: macOS 12.3.1 (21E258)
