v4.2.0
[SPARK-58038][DOC] Fix to use Hadoop 3.5 in PySpark installation guide and Spark Connect overview
[SPARK-53331][PS] Re-enable SPARK_ANSI_SQL_MODE during doc generation
[SPARK-36739][DOCS][PYTHON] Add apache license headers to makefiles
[SPARK-50821][PYTHON] Upgrade Py4J from 0.10.9.8 to 0.10.9.9