It’s probably more than you’d need for just two dependencies, but Apache’s Ivy does more or less exactly that (although admittedly without a nice web UI)

https://ant.apache.org/ivy/

Another solution for simple builds could be to use git submodules to include your libraries, that way for any commit of the top level you can see exactly what commit of the lower levels you’re using

I use Linux for work and I’m pretty much fully in bash. What’s the benefit of changing to a different shell? Will all my scripts still work?

Is Slackware even still around?

I’m in the WSL camp at home, and Red Hat at work