Update package.lock format to v2 + move to nodejs v16 and the latest npm version everywhere

[versusbassz]

• don't forget about the versions in Github Actions

[versusbassz]

The format was changed in 150b725cd8c8e1c4f5c84893986a45020c987e2a

[versusbassz]

The current versions of nodejs and npm are stored in the github workflow.
Done.