The cause of #75 is a change in the isodate library. Previously, 00:00:00.Z was considered valid, but in a version sometime after 0.6.0, this is considered invalid.
00:00:00.Z is also allowed in https://github.com/hapi-server/data-specification-schema/blob/main/HAPI-data-access-schema-3.2.json#L54.
00:00:00.Z seems not to be valid ISO8601. The documentation does not address this explicitly, and my recollection is that some parsers other than isodate allowed it.