GEOS-Chem submod update: Merge PR #2205 (Fix uptake on strat aer)

This commit informs the GCHP superproject about the following
commits that were pushed to the GitHub geoschem/geos-chem repository:

ced31f725 PR #2205 post-merge fix: Fixed typo in fullchem_RateLawFuncs.F90
3ce4dfbae Updated the changelog for PR #2205
679d534e3 Merge PR #2205 (Fix uptake coeffs on strat aerosol)

This PR corrects an issue where the wrong formula was used to compute
uptake of CO, NO2, VOC on strat aerosol in heterogeneous chemistry.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>