Updated spark 2.3.x and spark 2.4.x versions to test against them. #908

Job	Run time
check_mdoc	1m 24s
Check Dependencies	3s
context_dump	3s
build / matrix_prep	5s
build / build (3.0.0, test, -)	3m 5s
build / build (3.0.1, test, -)	3m 10s
build / build (3.0.2, test, -)	3m 0s
build / build (3.0, test-uploadReport, release)	3m 10s
build / build (3.1.0, test, -)	3m 14s
build / build (3.1.1, test, -)	3m 1s
build / build (3.1.2, test, -)	3m 15s
build / build (3.1, test-uploadReport, release)	3m 3s
build / build (3.2.0, test, -)	4m 13s
build / build (3.2.1, test, -)	3m 47s
build / build (3.2.2, test, -)	3m 52s
build / build (3.2, test-uploadReport, release)	3m 52s
build / build (3.3.0, test, -)	3m 57s
build / build (3.3.1, test, -)	3m 49s
build / build (3.3.2, test, -)	3m 55s
build / build (3.3.3, test, -)	6m 18s
build / build (3.3, test-uploadReport, release)	3m 49s
build / build (3.4.0, test, -)	4m 15s
build / build (3.4.1, test, -)	3m 48s
build / build (3.4, test-uploadReport, release)	3m 51s
check_scaladoc / matrix_prep	5s
check_scaladoc / scaladoc_api (3.0, test-uploadReport, release)	1m 7s
check_scaladoc / scaladoc_api (3.1, test-uploadReport, release)	1m 0s
check_scaladoc / scaladoc_api (3.2, test-uploadReport, release)	1m 25s
check_scaladoc / scaladoc_api (3.3, test-uploadReport, release)	1m 21s
check_scaladoc / scaladoc_api (3.4, test-uploadReport, release)	1m 19s
check_scaladoc / generate_publish_mdoc	0s
ci_ok	1s
	1h 22m 17s

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