Implement JSON schema compatibility check

[punit-kulal]

Features

• Support all drafts of json schema, take default as 2020 when schema draft version is not defined.
• Only supports testing of open model json schema (additional properties is true) and fails with error if that's not the case.
• Support only json Backward compatibility test.

Changes

• Bump go version to 1.20 due to updated jsonschema library(requires >1.19) and use of generics (requires >1.20)
• Update pipelines to use newer version of earlier used actions.
• Implement backward compatibility check for open content model.
  • No field delete.
  • Specifying additional properties is prohibited. (To ensure open content model)
  • No change in required fields.
  • No change in external or internal ref
  • Type specific checks(Type change)
  • No change schema validation condition for allOf
  • Only addition for schema validation condition like oneOf, anyOf

Not in scope

• Add tests for explore subfunctions.
• Validation keyword conflicts