Update to esmf@8.6.1 and mapl@2.46.2

Summary

Update esmf and mapl to @8.6.1 and @2.46.2 in configs/common/packages.yaml. We need to use require to avoid the concretizer picking another version of esmf (e.g. 8.6.1b04).

Testing

@climbfuji's laptop and CI. I verified that the correct esmf and mapl versions are getting built

Applications affected

all that use esmf / mapl

Systems affected

none

Dependencies

spack changed already merged

Issue(s) addressed

Resolves https://github.com/JCSDA/spack-stack/issues/1062

Checklist

[x] This PR addresses one issue/problem/enhancement, or has a very good reason for not doing so.
[x] These changes have been tested on the affected systems and applications.
[x] All dependency PRs/issues have been resolved and this PR can be merged.

JCSDA / spack-stack

Update to esmf@8.6.1 and mapl@2.46.2 #1142