It seems unlikely. I don't know of any other words to enter Hebrew from Germanic languages at that time; there are few enough borrowings even from Latin. There are,of course, piles of loanwords from Greek.

There are cognates to shipud in Aramaic and Arabic, as well, and Arabic has even less reason to borrow from Germanic languages than Hebrew does. Although they might have borrowed it from Aramaic.

Incidentally, the first appearance of the word is in the War Scroll, where it means "sharpened."