Update DSS usage for ClimaCore v0.10.25

[juliasloan25]

As of ClimaCore v0.10.25, Spaces.dss_interior_faces! and Spaces.dss_local_vertices! have been replaced with dss2!. Both ClimaCoupler and ClimaLSM need to be updated to use the new interface. Specifically, the deprecated functions are used in the Regridder code of both packages (which should also be moved to a shared location at some point).

Addressed by #244.

ClimaLSM issue #144 is the corresponding issue for ClimaLSM.

Coupler regridder using old functions
ClimaLSM regridder using old functions
new dss2! function
example using new dss2! which was previously using old functions
Coupler deleted commit with replaced functions

NB:

• let Sriharsha know once this is done.