This isn’t specific to lemm.ee, but I found a community called https://squabbles.io/s/technology
But I can’t see any place on lemm.ee that lets me subscribe to it from my lemm.ee account. I searched for it under Communities, but it doesn’t show up as an option.
I don’t believe Squabbles is federated/using ActivityPub, so you can’t connect to it through Lemmy. We can connect to Lemmy instances, as well as some other ActivityPub communities (most notably Kbin and Mastadon instances), but Squabbles is not using ActivityPub, it’s an entirely separate social media.