The only workarround i found was to make use of a mirror:

<mirror>
    <id>central-proxy</id>
    <name>Proxy of central repo</name>
    <url>https://repository.mulesoft.org/nexus/content/repositories/public/</url>
    <mirrorOf>central</mirrorOf>
</mirror>

And this worked, but i'm probably sure there's a better way to go about this.