fix cvmfs github CI issues with 5.4 #2395

Job	Run time
build (macos-latest)	2m 38s
build (ubuntu-latest)	2m 45s
java_matrix	3s
download_test_data	4s
unit_tests (25)	3m 37s
unit_tests (21)	4m 9s
test_clara	4m 12s
test_decoder	4m 13s
spotbugs	5m 21s
test_coatjava (ubuntu-latest, eb-ep)	44s
test_coatjava (ubuntu-latest, eb-eg)	39s
test_coatjava (ubuntu-latest, eb-enc)	40s
test_coatjava (ubuntu-latest, eb-epc)	36s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	52s
test_coatjava (ubuntu-latest, eb-eftpi)	40s
test_coatjava (ubuntu-latest, kpp)	39s
test_run-groovy	1m 0s
release_build	0s
generate_documentation	1m 2s
final	0s
deploy_web_pages	0s
	33m 54s

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