[KYUUBI #7327] Spark master version goes 4.2.0-SNAPSHOT

### Why are the changes needed?

Spark master version goes 4.2.0-SNAPSHOT

### How was this patch tested?

Monitor daily CI after landing.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #7327 from pan3793/master-4.2.

Closes #7327

e108db0 [Cheng Pan] Spark master version goes 4.2.0-SNAPSHOT

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>

Author: pan3793

pom.xml

@@ -2087,7 +2087,7 @@
             <id>spark-master</id>
             <properties>
                 <enforcer.maxJdkVersion>17</enforcer.maxJdkVersion>
-                <spark.version>4.0.0-SNAPSHOT</spark.version>
+                <spark.version>4.2.0-SNAPSHOT</spark.version>
                 <antlr4.version>4.13.1</antlr4.version>
                 <maven.plugin.scalatest.exclude.tags>org.scalatest.tags.Slow,org.apache.kyuubi.tags.DeltaTest,org.apache.kyuubi.tags.IcebergTest,org.apache.kyuubi.tags.PaimonTest,org.apache.kyuubi.tags.HudiTest,org.apache.kyuubi.tags.PySparkTest</maven.plugin.scalatest.exclude.tags>
             </properties>