Ekn ids can be 40 digits long.
Ekn ids can be 40 digits long.

A refactor occurred in db-build recently which
means that ekn ids are now 40 characters long.
We need to support both the new and old lengths.

[endlessm/eos-sdk#3995]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib