Repo sync: skip 32 bit MSIs by default on x64

Despite being a niche, 32-bit MSIs get synced to all customers who use our IfW repo.

Not only this burdens their network and storage, their antivirus annoys them about our 32-bit MSIs being fishy. ref/IP/63418

For now, I felt free to request to drop 32-bit MSIs from our IfW repo:

https://git.icinga.com/infra/puppet/control/-/merge_requests/21