FYI: Spark - just released 4.0.0 which is Scala 2.13 and drops Scala 2.12 support

[Mike Beckerle]

FYI:

   - [SPARK-45314] <https://issues.apache.org/jira/browse/SPARK-45314> Drop
   Scala 2.12 and make Scala 2.13 the default