build script improvements #1836

Job	Run time
build (ubuntu-latest)	2m 36s
download_test_data	3s
java_matrix	4s
build (macos-latest)	4m 3s
unit_tests (21)	2m 46s
unit_tests (25)	2m 41s
generate_documentation	59s
deploy_web_pages	0s
spotbugs	7m 38s
test_decoder	2m 28s
test_run-groovy	28s
test_clara	5m 6s
test_coatjava (ubuntu-latest, eb-eftpi)	2m 30s
dependency_analysis	1m 18s
test_coatjava (ubuntu-latest, eb-eg)	2m 28s
test_coatjava (ubuntu-latest, eb-epc)	2m 28s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	2m 55s
test_coatjava (ubuntu-latest, eb-enc)	2m 5s
test_coatjava (ubuntu-latest, kpp)	3m 24s
test_coatjava (ubuntu-latest, eb-ep)	2m 46s
release_build	-1s
final	3s
	48m 48s

Provide feedback