Hello, When trying to validate an object, if stripUnknown is set to true, the dependency validation is skipped. [This portion of code](https://github.com/hapijs/joi/blob/51780624e5e7ef0e4b5a29d0b85d8948f940462f/lib/object.js#L216-L218) prevents the dependency check. If there is any way to bypass this behaviour I'm open to suggestions !! Thanks