chore(deps): update to Fabric8 client 7.4.0 #5525

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	3m 20s
sample_operators_tests (sample-operators/leader-election)	3m 35s
sample_operators_tests (sample-operators/webpage)	3m 13s
sample_operators_tests (sample-operators/mysql-schema)	2m 53s
	13m 1s

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