release: release-it did not upgrade stark version in package-lock.json during the latest release

[SuperITMan]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[X] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/NationalBankBelgium/stark/blob/master/CONTRIBUTING.md#got-a-question-or-problem

Current behavior

release-it does not adapt version in package-lock.json

Expected behavior

release-it should upgrade version in package-lock.json

[christophercr]

Apparently we can change the pkgFiles option in the release-it config file to include the package-lock.json:

release-it/release-it#147