DT-2410: Update networknt jsonschema to v3

[rushtong]

Addresses

https://broadworkbench.atlassian.net/browse/DT-2410

Summary

WIP

• Updates json-schema utilities to the latest version.

Currently failing due to a mockserver dependency on the older version that doesn't seem to be included in their jar:

java.lang.NoClassDefFoundError: com/networknt/schema/SpecVersion$VersionFlag

	at org.mockserver.validator.jsonschema.JsonSchemaValidator.<clinit>(JsonSchemaValidator.java:39)
	at org.mockserver.serialization.ExpectationSerializer.getValidator(ExpectationSerializer.java:67)
	at org.mockserver.serialization.ExpectationSerializer.deserialize(ExpectationSerializer.java:127)
	at org.mockserver.serialization.ExpectationSerializer.deserializeArray(ExpectationSerializer.java:195)
	at org.mockserver.serialization.ExpectationSerializer.deserializeArray(ExpectationSerializer.java:158)
	at org.mockserver.client.MockServerClient.upsert(MockServerClient.java:1517)
	at org.mockserver.client.ForwardChainExpectation.respond(ForwardChainExpectation.java:84)

---

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• Label PR with a Jira ticket number and include a link to the ticket
• Label PR with a security risk modifier [no, low, medium, high]
• PR describes scope of changes
• Get a minimum of one thumbs worth of review, preferably two if enough team members are available
• Get PO sign-off for all non-trivial UI or workflow changes
• Verify all tests go green
• Test this change deployed correctly and works on dev environment after deployment

[rushtong]

Closing this. Mockserver has an open bug on this very issue: mock-server/mockserver#1966