update to node 20

[0xteddybear]

curretly tests are not passing on node versions later than 18, and that is caused by the library we use to mock the existence of a remappings.txt in the filesystem.

Also, many dependencies are outdated. We should:

• update dependencies to their latest versions
• make sure test pass on all currently supported node versions
• configure matrix testing on ci so the above is automatically checked in the future