Update red-arrow.gemspec to add xsimd msys2 dependency

[dsisnero]

Rationale for this change

What changes are included in this PR?

Are these changes tested?

Are there any user-facing changes?

[github-actions]

Thanks for opening a pull request!

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See also:

• Other pull requests
• Contribution Guidelines - How to contribute patches

[kou]

Why do we need this?
Could you show a full error log you got?