Update packages and fix pylint issues in the ini file

[ulliholtgrave]

Short description

This PR updates our JS and python packages to their newest version.

We should keep in mind that our setup.cfg will be deprecated by some point and we should consider switching to a pyproject.toml setup (see Issue #1362 ).

[codeclimate]

Code Climate has analyzed commit 52b961b and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 73.1% (0.0% change).

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[timobrembeck]

Thanks! 👍

Do you have a resource that claims that setup.cfg is deprecated (soonish)? I know that pyproject.toml is the "new" format, but at the moment, it cannot replace setup.cfg, can it?
(it can just replace some of the configuration values, but at the moment this would just mean one additional file, I'm not sure whether that's an improvement...)

[ulliholtgrave]

I resolved all issues and created #1362 as a reminder to keep track of the current development in Setup Tools.

[timobrembeck]

Thanks! 👍