Changes to Preview a signal

added the new optional request property config/oneOf[subschema #13: Company posted with keyword]/excludedKeywords

added the new optional request property config/oneOf[subschema #35: Person posted with keyword -> subschema #36: Person posted with keyword]/excludedKeywords

added joined_accelerator person_contact_change person_added_role discriminator mapping keys to the config request property

added JoinedAccelerator PersonContactChange PersonAddedRole to the config request property oneOf list

added the new optional request property config/oneOf[subschema #5: Job posting with keyword]/searchFields

added the new optional request property config/oneOf[subschema #5: Job posting with keyword]/modalities

the response property advice became nullable for the status 200

the response property advice became optional for the status 200

the advice response's property default value was removed for the status 200

request property config/oneOf[subschema #5: Job posting with keyword]/locationTypes deprecated

endpoint added