Fix test_surge_from_track after change in Holland 2008 implementation…

[ThomasRoosli]

… (climada_python PR #833)

Changes proposed in this PR:

• adapt test values after change in the windmodel in climada_python (introduced in pull request #833 in climada_python Feature/tc holland vtrans climada_python#833)

This PR fixes #842 in climada_python CLIMADA-project/climada_python#842

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[tovogt]

Yes, I also noticed this while working on #105, and fixed it there. But I think it's good to have a separate PR for this here.

[emanuel-schmid]

🚀 Many thanks! 🙌