Add some contact persons for spark library (docker-library#20195)

Author: yaooqinn

library/spark

@@ -1,4 +1,9 @@
-Maintainers: Apache Spark Developers <dev@spark.apache.org> (@ApacheSpark)
+Maintainers: Apache Spark Developers <dev@spark.apache.org> (@ApacheSpark),
+             Hyukjin Kwon (@HyukjinKwon),
+             Jie Yang (@LuciferYang),
+             Kent Yao (@yaooqinn),
+             Wenchen Fan (@cloud-fan),
+             Yikun Jiang (@Yikun)
 GitRepo: https://github.com/apache/spark-docker.git
 
 Tags: 4.0.1-scala2.13-java21-python3-ubuntu, 4.0.1-java21-python3, 4.0.1-java21, python3, latest