Spring Cloud Function managed ObjectMapper serializes instants as timestamps #1171
Description
Due to #1148 Spring Cloud Function stopped using the SB-provided ObjectMapper and started using its own instead. This ObjectMapper has the default value of SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, i.e., true, which results in dates being serialized as timestamps such as 1722512479.223919000.
May I use this opportunity and suggest that not using the SB-provided ObjectMapper is not a good idea, as it modifies behavior that SB users have come to rely on. Apart from date serialization, see the complaints about the SCF mapper not supporting Kotlin, as it doesn't register KotlinModule.