Change to `application/cloudevents+json` for CloudEvent content-type

[maxl2287]

Problem description

              requestBody:
                required: true
                content:
                  application/json:
                    schema:
                      $ref: "#/components/schemas/CloudEvent"

For the callbacks the request-body is declared as application/json. Wouldn't it be good to define it as application/cloudevents+json ?

Expected behavior

              requestBody:
                required: true
                content:
                  application/cloudevents+json:
                    schema:
                      $ref: "#/components/schemas/CloudEvent"

Additional context https://github.com/camaraproject/Commonalities/blob/main/artifacts/camara-cloudevents/event-subscription-template.yaml#L110

[patrice-conil]

Hi @maxl2287, I agree with you, to be compliant with cloud events specs we need to move to application/cloudevents+json. Patrice