http mirror blocked since maven 3.8.1

[LinuxSquare]

Hi @okkero

I was trying to import your project into my plugin. But maven reported, that http-repos aren't allowed anymore.

Since Maven 3.8.1 http repositories are blocked.

Possible solutions:
- Check that Maven pom files do not contain http repository http://nexus.okkero.com/repository/maven-releases/
- Add a mirror(s) for http://nexus.okkero.com/repository/maven-releases/ that allows http url in the Maven settings.xml
- Downgrade Maven to version 3.8.1 or earlier in settings

Is there a possibility, to add a Let's Encrypt certificate or similar, to allow https traffic?

Thanks ~ LinuxSquare