Convert the custom schema to the current JSON schema version 2020-12

[AJNOURI]

Enhancement summary

The JSON schema used is a custom one, why not using a standard schema version? (https://json-schema.org/specification) It makes it easier to use other standard tools with the schema

Which component of AVD is impacted

eos_validate_state

Use case example

One of the tools I would like to use is "https://github.com/koxudaxi/datamodel-code-generator" to generate Pydantic models. This will open doors to many perspectives.

Describe the solution you would like

Convert the custom schema to the current version is 2020-12!

Describe alternatives you have considered

No response

Additional context

No response

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