improved script #199

Job	Run time
projects (ubuntu-latest, jdk_17_gradle)	3m 5s
projects (windows-latest, jdk_11_gradle)	5m 20s
projects (macos-latest, jdk_17_gradle)	9m 57s
projects (ubuntu-latest, jdk_11_maven)	11m 35s
projects (windows-latest, jdk_11_maven)	16m 50s
projects (ubuntu-latest, jdk_21_maven)	9m 33s
projects (ubuntu-latest, jdk_11_gradle)	4m 4s
projects (windows-latest, jdk_17_gradle)	4m 45s
projects (ubuntu-latest, jdk_17_maven)	8m 40s
projects (macos-latest, jdk_8_gradle)	9m 38s
projects (windows-latest, jdk_21_maven)	11m 58s
projects (macos-latest, jdk_11_gradle)	10m 17s
projects (macos-latest, jdk_11_maven)	23m 19s
projects (windows-latest, jdk_17_maven)	14m 51s
projects (windows-latest, jdk_8_gradle)	4m 16s
projects (macos-latest, jdk_8_maven)	25m 22s
projects (macos-latest, jdk_21_maven)	19m 29s
projects (ubuntu-latest, jdk_8_gradle)	2m 38s
projects (ubuntu-latest, jdk_8_maven)	9m 43s
projects (windows-latest, jdk_8_maven)	15m 9s
projects (macos-latest, jdk_17_maven)	21m 58s
	4h 2m 27s

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