Add ansible-core optional dependency

[ryanmerolle]

Environment

• Python version: any
• schema-enforcer version: any

Proposed Functionality

ansible-base 2.10.0+ was set a an optional dependency

ansible-core initial release is 2.11.0 and should be added as an optional dependency

Use Case

With Ansible moving to a new package called ansible-core instead of ansible-base, this should be reflected in this project.