Unique validation rule flags if unchanged when editing/saving

[DistantVoyager]

Environment

• Python version: 3.8
• Nautobot version: 1.6.1b1
• nautobot-data-validation-engine version: 2.1.0

Expected Behavior

With a unique validation rule enabled, I can successfully edit an object while not modifying the unique validated field.

Observed Behavior

Unable to edit due to the unique validation rule being flagged for the validated field. Field value is still unique to that object, but when editing it's somehow being prevented from staying the same.

Steps to Reproduce

1. Create a new unique validation rule such as for dcim | device serial field with a max value of 1
   

2. Create an object of the same content type as the unique rule, such as a new device. Enter a unique value in validated field, such as 123 for serial
   

3. Then, edit that object by modifying a field other than the unique validated one (leave that field value the same). For example, add a note to the device and then try updating/saving it.

4. A validation error is returned for the unique validated field, despite not changing it. For example, when just trying to add a note to the device: