Bump coverage from 7.6.7 to 7.6.8 #850

Job	Run time
unit (utests)	48s
integration (tests-noqueue, QuickTest)	1m 47s
unit (tests-api-mock)	54s
integration (tests-noqueue, BuildFailedTest)	39s
unit (tests-server)	48s
lint	37s
integration (tests-noqueue, RepositoryTests)	34s
integration (tests-noqueue, TestBertE)	5m 30s
integration (tests-noqueue, TestQueueing)	36s
integration (tests-noqueue, TaskQueueTests)	3m 23s
integration (tests, QuickTest)	1m 42s
integration (tests, BuildFailedTest)	38s
integration (tests, RepositoryTests)	43s
integration (tests, TestBertE)	7m 17s
integration (tests, TestQueueing)	5m 28s
integration (tests, TaskQueueTests)	3m 24s
	34m 48s

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