Supporting scala 2.13 version for toree launcher and toree assembly

[shivangi24]

Hi,

We are currently using Spark 4.0.0, which is built with Scala 2.13. During our attempt to start the Scala kernel, we encountered compatibility issues between the Spark JARs (compiled with Scala 2.13.16) and the Toree JARs (version 3.0.0). As a result, the Scala kernel fails to start.

Is there a way to compile the Toree JARs specifically for Scala 2.13.16 to resolve this issue?