Bumps Barista to 4.0.0 and ditches jcenter usages

[ubiratansoares]

Description

Describe your changes in detail
Why is this change required? What problem does it solve?
If it fixes an open issue, please put a link to the issue here.

Self-explained

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• House cleaning (change at project level, like tooling revamp, refactors, etc)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (something that would cause existing functionality to not work as expected)
• Documentation (self-explained)

Implementation details

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Possible after AdevintaSpain/Barista#382 solved