Upgrade module parent versions to 4.5.0-SNAPSHOT

[srstsavage]

Currently thredds-parent is set to version 4.5.0-SNAPSHOT, while the modules still use 4.3.19. This breaks builds for users without thredds-parent 4.3.19 already in their local repositories, since the Unidata repositories are configured in thredds-parent and thredds-parent 4.3.19 isn't in the normally searched repos. Upgrading all modules to use thredds-parent 4.5.0-SNAPSHOT will fix.

[srstsavage]

Closing in favor of pull request:
#36