CICE6 cmake and namelist updates for post release v6.5.0 merge

[zhaobin74]

This PR updated CMake and ice_in (CICE6 config file) to be consistent with upstream merge of CICE6.

Zero-diff for AMIP and coupled CICE4.

Depends on GEOS-ESM/CICE#6 and GEOS-ESM/Icepack#5, and GEOS-ESM/GEOSgcm#779

[github-actions]

This PR is being prevented from merging because you have added one of our blocking labels: Contingent - DNA, Needs Lead Approval, Contingent -- Do Not Approve. You'll need to remove it before this PR can be merged.

[sanAkel]

@zhaobin74
It's better to separate PRs that change:

• icepack (e.g., cmake change).
• code change (lhf).

From maintenance point of view- for your future reference.

[zhaobin74]

@zhaobin74 It's better to separate PRs that change:

• icepack (e.g., cmake change).
• code change (lhf).

From maintenance point of view- for your future reference.

Thanks for approving, @sanAkel. I will split them in future PRs.

[mathomp4]

Trust in Bin! Approve for Cmake