[material_ui] Update Material tokens to Material version 38.2.83 by elliette · Pull Request #13082 · flutter/packages

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@elliette

The following contributors were found for this pull request:

✅ 5fe8dd0 Committer: @elliette <21270878+elliette@users.noreply.github.com>
✅ 5fe8dd0 Author: <flutter-****************copybara@google.com>

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