Redis and Elasticsearch were both built by Israelis, and there is also Israeli code in important projects like the Linux kernel. And of course, also Israeli contributions in closed-source tech like CUDA. Avoiding all of that is a pretty tall order. But if you want to impair your systems by purifying them based on national origin of the contributors, have at it.
In fact Elasticsearch was specifically mentioned as a partner of the "Gaza Humanitarian Foundation", a fake aid org who caused many Palestinians to be killed under their watch. (Elasticsearch denied involvement when I contacted them)
But to be more specific I would narrow it down to avoiding using any tech which Israel could use for surveillance, narrative control, or harm.
To the best of your ability. If you can avoid Israeli tech then do so, if you can't at least you try. Also opensource technology is different because you can verify and audit the tech
