chore: fix pr_build*.yml

Author: comphead

spark/src/main/scala/org/apache/comet/serde/literals.scala

@@ -132,7 +132,9 @@ object CometLiteral extends CometExpressionSerde[Literal] with Logging {
       case ByteType =>
         array.foreach(v => {
           val casted = v.asInstanceOf[lang.Byte]
-          listLiteralBuilder.addByteValues(casted.intValue())
+          listLiteralBuilder.addByteValues(
+            if (casted != null) casted.intValue()
+            else null.asInstanceOf[Integer])
           listLiteralBuilder.addNullMask(casted != null)
         })
       case ShortType =>