remove Lerna

[turadg]

What is the Problem Being Solved?

Lerna was abandoned,

Important note: this project is not actively maintained. Consider adopting an alternative toolset for monorepo management.

And then bought by Nx. They've been tightening its integration with their SaaS, which we don't use.

Description of the Design

Either adopt Lerna Lite instead,
#5927 (comment)

Or drop Lerna (some research notes).

Security Considerations

TBD

Test Plan

TBD

[turadg]

Reconsider whether to remove Lerna because it has a new owner:

Important note: this project is changing stewardship to Nrwl! Your favorite tool will continue to live on. Stay tuned for updates and soon a project roadmap!

We might want to make the jump to the new owner, https://nx.dev/

[turadg]

I tried upgrading to Lerna 5 and when I tried lerna run --stream test it only checked a handful of packages and spuriously passed the rest. I didn't see anything in the https://github.com/lerna/lerna/blob/main/CHANGELOG.md to explain it. Makes me think we may be better off without it.

https://github.com/Agoric/agoric-sdk/pull/new/ta/lerna-v5