Fix mapValues (#14)

CI is failing with
```
[ERROR] [Error] /var/lib/applied-bk-agent/checkout/spark-private/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala:593: value mapValues is not a member of scala.collection.IterableView[(org.apache.spark.sql.catalyst.expressions.Attribute, Seq[(org.apache.spark.sql.catalyst.expressions.NamedExpression, Seq[String])]),scala.collection.immutable.Map[org.apache.spark.sql.catalyst.expressions.Attribute,Seq[(org.apache.spark.sql.catalyst.expressions.NamedExpression, Seq[String])]]]
```

This replaces the `mapValues` construct with an equivalent one that should work.

Author: ajsquared

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala

@@ -590,7 +590,7 @@ case class UnresolvedStarExcept(target: Option[Seq[String]], excepts: Seq[Seq[St
       : Seq[NamedExpression] = {
       // group the except pairs by the column they refer to. NOTE: no groupMap until scala 2.13
       val groupedExcepts: AttributeMap[Seq[Seq[String]]] =
-        AttributeMap(excepts.groupBy(_._1.toAttribute).view.mapValues(v => v.map(_._2)))
+        AttributeMap(excepts.groupBy(_._1.toAttribute).map { case (k, v) => k -> v.map(_._2) })
 
       // map input columns while searching for the except entry corresponding to the current column
       columns.map(col => col -> groupedExcepts.get(col.toAttribute)).collect {