chore: update to Fabric8 7.0-SNAPSHOT for testing #4926

Job	Run time
check_format_and_unit_tests	1m 28s
special_integration_tests (11)	2m 40s
special_integration_tests (17)	1m 53s
httpclient-tests (jdk) / integration_tests	20m 40s
httpclient-tests (jetty) / integration_tests	20m 14s
integration_tests (11, 1.30.3) / integration_tests	19m 31s
httpclient-tests (vertx) / integration_tests	19m 29s
integration_tests (11, 1.31.0) / integration_tests	20m 1s
integration_tests (11, v1.28.12) / integration_tests	19m 35s
integration_tests (11, v1.29.7) / integration_tests	19m 18s
integration_tests (17, 1.30.3) / integration_tests	18m 47s
integration_tests (17, 1.31.0) / integration_tests	20m 3s
integration_tests (17, v1.28.12) / integration_tests	20m 18s
integration_tests (17, v1.29.7) / integration_tests	19m 58s
	3h 43m 55s

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