Switch back to released version of ncs_navigator_configuration.

The latest released version contains the commit that was previously
locked.

(In the future, please note why you are using the git version in a
comment in the Gemfile.)
Add MDES 3.2 operational enumerator. #3468.

It's identical to the 3.1 one because there are no operational data
changes for MDES 3.2.