Bump spark2.version from 2.4.8 to 3.5.3

Bumps `spark2.version` from 2.4.8 to 3.5.3.

Updates `org.apache.spark:spark-core_2.12` from 2.4.8 to 3.5.3

Updates `org.apache.spark:spark-sql_2.12` from 2.4.8 to 3.5.3

---
updated-dependencies:
- dependency-name: org.apache.spark:spark-core_2.12
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: org.apache.spark:spark-sql_2.12
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -186,7 +186,7 @@
     <scala-xml.version>2.3.0</scala-xml.version>
     <circe.version>0.14.10</circe.version>
 
-    <spark2.version>2.4.8</spark2.version>
+    <spark2.version>3.5.3</spark2.version>
     <spark3.version>3.5.3</spark3.version>
     <kafka2.version>2.8.2</kafka2.version>
     <confluent.version>7.7.0</confluent.version>