Changes to Perform batch operations on a company's fields

added update-fields mapping keys to the request discriminator

added company-multi company datetime dropdown dropdown-multi number number-multi location location-multi person person-multi ranked-dropdown filterable-text filterable-text-multi text discriminator mapping keys to the oneOf[subschema #1: CompanyBatchOperationUpdateFields]/updates/items/value request property

added authentication authorization bad-request conflict method-not-allowed not-acceptable not-found not-implemented rate-limit server timeout unprocessable-entity unsupported-media-type validation discriminator mapping keys to the errors/items response property for the response status default

added bad-request validation discriminator mapping keys to the errors/items response property for the response status 400