Fixed db password file endline issue #8884

Job	Run time
test	18m 13s
test	18m 16s
build	4m 34s
build	4m 34s
CodeQL	6m 29s
CodeQL	6m 29s
lint	16m 43s
lint	16m 43s
integration-configs-db	2m 16s
integration-configs-db	2m 16s
integration (requires_docker)	5m 57s
integration (requires_docker)	5m 57s
integration (integration_alertmanager)	3m 58s
integration (integration_alertmanager)	3m 58s
integration (integration_backward_compatibility)	8m 30s
integration (integration_backward_compatibility)	8m 30s
integration (integration_memberlist)	7m 29s
integration (integration_memberlist)	7m 29s
integration (integration_querier)	12m 4s
integration (integration_querier)	12m 4s
integration (integration_ruler)	4m 0s
integration (integration_ruler)	4m 0s
integration (integration_query_fuzz)	2m 29s
integration (integration_query_fuzz)	2m 29s
deploy_website	0s
deploy_website	0s
deploy	0s
deploy	0s
	3h 5m 27s

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