[SPARK-52005] Upgrade Spark build dependency to 4.0.0

Author: dongjoon-hyun

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ lombok = "1.18.38"
 operator-sdk = "4.9.0"
 okhttp = "4.12.0"
 dropwizard-metrics = "4.2.30"
-spark = "4.0.1-SNAPSHOT"
+spark = "4.0.0"
 log4j = "2.24.3"
 
 # Test