support: New Antarctic theme

[satof3]

Task

https://redmine.weseek.co.jp/issues/142444

Figma

https://www.figma.com/file/ZiEcjZ8sYt6YvowboA5Um6/GROWI-v7?type=design&node-id=281%3A6650&mode=design&t=b0q2ehFTnwZBJHuh-1

概要

• Antarctic テーマの実装

Screenshot

[reg-suit[bot]]

reg-suit detected visual differences.

Check this report, and review them.

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What do the circles mean?

The number of circles represent the number of changed images.
:red_circle: : Changed items, :white_circle: : New items, :black_circle: : Deleted items, and :large_blue_circle: Passed items

How can I change the check status?

If reviewers approve this PR, the reg context status will be green automatically.