Update spark-core, spark-mllib, spark-sql to 3.1.2 (#535)
Update spark-core, spark-mllib, spark-sql to 3.1.2 (#535)

Co-authored-by: Lars Hupel <b821e8a71219c8375c14e6ca77df3c8dd6a918c7@mytum.de>
adelbertc/frameless