chore: update to Fabric8 7.0-SNAPSHOT for testing #4905

Job	Run time
check_format_and_unit_tests	2m 41s
special_integration_tests (11)	3m 10s
special_integration_tests (17)	2m 16s
httpclient-tests (jdk) / integration_tests	20m 16s
httpclient-tests (jetty) / integration_tests	20m 11s
httpclient-tests (vertx) / integration_tests	18m 57s
integration_tests (11, 1.30.3) / integration_tests	19m 40s
integration_tests (11, 1.31.0) / integration_tests	21m 7s
integration_tests (11, v1.29.7) / integration_tests	19m 33s
integration_tests (17, 1.30.3) / integration_tests	19m 7s
integration_tests (17, 1.31.0) / integration_tests	20m 30s
integration_tests (11, v1.28.12) / integration_tests	20m 46s
integration_tests (17, v1.28.12) / integration_tests	20m 56s
integration_tests (17, v1.29.7) / integration_tests	20m 58s
	3h 50m 8s

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