Merging allOf references before validation

[YOU54F]

allOfs cause pain in validation.

You can pre-process them

https://github.com/YOU54F/oas-merge

Wonder if we should just add this as part of the tool

[github-actions]

👋 Hi! The 'smartbear-supported' label has just been added to this issue, which will create an internal tracking ticket in PactFlow's Jira (PACT-1037). We will use this to prioritise and assign a team member to this task. All activity will be public on this ticket. For now, sit tight and we'll update this ticket once we have more information on the next steps.

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[mefellows]

Closing this off, the following PRs have addressed it via a much nicer and less invasive means:

• Feat: Upgrade AJV from 6 to 8 #31
• feat: improve support for allOf, anyOf, oneOf #32
• feat: allow polymorphic inheritance in request bodies #34

[mefellows]

The detailed explanation for all of keyword support now lives here: https://docs.pactflow.io/docs/bi-directional-contract-testing/contracts/oas/keyword-support