v3.3: restore "propertyName" as required in the discriminator object#5228

ralfhandl merged 1 commit intoOAI:v3.3-devOAI/OpenAPI-Specification:v3.3-devfrom

karenetheridge:ether/3.3-propertyName-still-requiredkarenetheridge/OpenAPI-Specification:ether/3.3-propertyName-still-requiredCopy head branch name to clipboard