Update to use pipe-fittings v1.6.0 #8348

Job	Run time
Build	59s
Test (ubuntu-latest, migration)	31s
Test (ubuntu-latest, brew)	33s
Test (ubuntu-latest, installation)	45s
Test (ubuntu-latest, plugin)	2m 1s
Test (ubuntu-latest, connection_config)	1m 25s
Test (ubuntu-latest, service)	1m 9s
Test (ubuntu-latest, settings)	20s
Test (ubuntu-latest, ssl)	39s
Test (ubuntu-latest, blank_aggregators)	16s
Test (ubuntu-latest, search_path)	1m 41s
Test (ubuntu-latest, chaos_and_query)	2m 13s
Test (ubuntu-latest, dynamic_schema)	33s
Test (ubuntu-latest, dynamic_aggregators)	36s
Test (ubuntu-latest, cache)	40s
Test (ubuntu-latest, performance)	22s
Test (ubuntu-latest, config_precedence)	45s
Test (ubuntu-latest, cloud)	31s
Test (ubuntu-latest, snapshot)	23s
Test (ubuntu-latest, schema_cloning)	1m 16s
Test (ubuntu-latest, exit_codes)	23s
Test (ubuntu-latest, force_stop)	24s
Clean Up Artifacts	2s
	18m 27s

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