Free up space on github actions runners for all jobs. #2685

Job	Run time
Validate script WDLs using womtools	2m 3s
Validate generated WDLs using womtools	14m 4s
check if the environment has privileges	1s
build and push gatk docker to artifacts	30m 7s
WDL test RUN_CNV_GERMLINE_COHORT_WDL on cromwell	42m 13s
WDL test RUN_CNV_GERMLINE_CASE_WDL on cromwell	41m 41s
WDL test RUN_CNV_SOMATIC_WDL on cromwell	36m 8s
WDL test RUN_M2_WDL on cromwell	31m 47s
WDL test RUN_CNN_WDL on cromwell	30m 26s
WDL test RUN_VCF_SITE_LEVEL_FILTERING_WDL on cromwell	28m 36s
Java 17.0.6+10 build and test cloud	17m 50s
Java 17.0.6+10 build and test integration	48m 25s
Java 17.0.6+10 build and test unit	28m 1s
Java 17.0.6+10 test on docker integration	58m 34s
Java 17.0.6+10 test on docker unit	30m 29s
Java 17.0.6+10 test on docker variantcalling	1h 5m 33s
Java 17.0.6+10 test on docker conda	42m 18s
	9h 8m 16s

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