Merge pull request #517 from gaeljw/v2

✨ feat: upgrade to testcontainers v2
@gaeljw I'm going to merge it but feel free to contribute a migration guide as a separate PR

Fix build.sbt

update plugins

Use Resolver.file for sonatype bundle directory

Use Resolver.file for sonatype bundle directory

Use Resolver.file for sonatype bundle directory

Fix publishTo configuration for Central Portal bundle publishing

Publishing to central.sonatype

Merge pull request #487 from greshny-forks/specs2-v2

specs2 integration

Merge pull request #426 from greshny-forks/k3s-module

K3S Module