fix lerna / migrate away from lerna

[sakulstra]

Feature Request

As you can see in our ci workflow we're having multiple issues with lerna right now.
lerna/lerna#2788
lerna/lerna#1893
Lerna seems to be no longer properly maintained: lerna/lerna#1893
Might make sense to put some effort into fixing them/maintaining a fork as prs at lerna seem to be no longer to be accepted.

Alternatives to consider

• We only have two packages right now and might want to consider just publishing things manually(via ci, but without lerna tooling).
• https://www.npmjs.com/package/bolt
• https://github.com/nrwl/nx
• https://turborepo.org/

[sakulstra]

https://github.com/atlassian/changesets seems like another alternative people are migrating to