[SW-98] Upgrade H2O dependency to 3.8.1.4
[SW-98] Upgrade H2O dependency to 3.8.1.4

The motivation of this improvement is to provide security stuff bundled in the latest
H2O version.

h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water