GEOS-Chem submod update: PR #2425 post-merge fix (CHANGELOG.md update_

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

8f0a16767 PR #2425 post-merge fix: Move 14.4.3 entry to top of CHANGELOG.md

This PR moves a CHANGELOG.md entry for 14.4.3 to its proper place.

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