Reveal issue with nested span when deriving Schema

[strokyl]

Today, I found something really weird happening when deriving schema for List or Seq of type X when X contain a Seq[Seq[Z]].

I write some unit-test to reveil the issue and to better explain the problem. At this point, I am even not sure this is an issue with SBT, maybe it come from magnolia or even scalac.

[strokyl]

Ok the CI show the issue does not appear with Scala 1.13

[adamw]

Closing old PRs