CI/CD fix knox dependency error on npm ci

[raulsperoni]

I was able to build client-report container with this change.

[patcon]

I think this PR might be where CI started breaking (at least for e2e tests)

The past CI logs are now flushed, but it seems the the most recent available failing logs are still pointing to an issue in client-report where the wrong lockfile version is present:
https://github.com/compdemocracy/polis/actions/runs/3110297108/jobs/5041341778#step:9:1002

This seems to fit the change that happened (migration from one lockfile format to another in the package-lock.json during an upgrade).

I don't think we can upgrade node or npm right now for other reasons to do with gulp, so I think the cautious thing to do would be to revert this. (I suspect the issue with client-report that @raulsperoni was experiencing was likely related to the incorrect version of node that was being used anyhow.)

Does this sound like an ok path @metasoarous @colinmegill ?