use Scala LTS - 3.3.x

[visma-alexander-maslov]

now as Scala has this LTS thing in place https://virtuslab.com/blog/technology/the-scala-3-compatibility-story/#lts-and-scala-next

It feels like for the generally used library it is better to stick to the LTS branch and and upgrade to the next one when it is absolutely necessary. Maybe even release in parallel 2 different artifacts, not sure.

Now the latest version of scalapb-validate seems to break builds which depend on LTS Scala 3.3.3 as compiler seems to not be able to read TASTY format from the 3.4.2.

some info about versioning and binary compatibility
https://virtuslab.com/blog/technology/the-scala-3-compatibility-story/
https://docs.scala-lang.org/scala3/reference/language-versions/binary-compatibility.html
https://www.scala-lang.org/blog/2022/08/17/long-term-compatibility-plans.html

[visma-alexander-maslov]

New LTS 3.3.4 has been released. https://www.scala-lang.org/download/3.3.4.html
I think this library need to depend on LTS version, not simply the latest scala which ScalaSteward brings