* Update all development npm dependencies (2020-06-22)

* fix linting config

* Update devDependencies

This also triggered some changes in our test setup because of react-native-testing-libraries
breaking changes.

I've reverted jests major update, as it was causing test issues,
which I think would be solved by updating react-native (which is
something I don't want to introduce in this PR).

Additionally I removed babel-jest as it's obsolete.

* Locking vector-icons to 6.6.0

* ignore node engine

quick edit to see if ios builds

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