Greenkeeper/default/webpack 4.23.1

[christophercr]

Closes #790

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NationalBankBelgium/stark/blob/master/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[X] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Current version: 4.22.0

What is the new behavior?

Updated to the latest version: 4.23.1

Does this PR introduce a breaking change?

[ ] Yes
[X] No

[coveralls]

Coverage increased (+0.007%) to 91.2% when pulling d6cf886 on greenkeeper/default/webpack-4.23.1 into 352eab9 on master.