Overflow in HealthConfig nanoseconds fields

[devnatan]

Nanoseconds were being represented as an Int instead of a Long, causing an overflow.

Caused by: kotlinx.serialization.json.internal.JsonDecodingException: Unexpected JSON token at offset 6710: Failed to parse int for input '30000000000' at path: $.Config.Healthcheck.Interval
JSON input: .....ealth"],"Interval":30000000000,"StartPeriod":120000000000,"R.....