fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHECOMMONS-10734078

Author: snyk-bot

pom.xml

@@ -10,7 +10,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<scala.version>2.13.16</scala.version>
 		<scala.main.version>2.13</scala.main.version>
-		<spark.version>3.5.6</spark.version>
+		<spark.version>4.0.0</spark.version>
 		<connector.version>3.5.1</connector.version>
 		<cassandra.version>5.0.4</cassandra.version>
 		<junit.version>5.9.1</junit.version>