Need to update externals to match latest CESM beta tag

### Issue Type

Externals Update

### Issue Description

A newer CLM tag and CDEPS, CMEPS is needed to couple to the land model for deposition fluxes, I think.

### Will this change answers?

No

### Will you be implementing this yourself?

Any Software Engineer can do this

Start by locating the repository's external-dependency configuration and compare its entries with the latest CESM beta tag. Update the CLM, CDEPS, and CMEPS references needed for land-model deposition-flux coupling, then verify that the externals resolve and the coupled configuration works.

Written by the indexing model from the issue text.