Bump prometheus from 1.7.0 to 1.8.0 #9929

Job	Run time
publish_vars	10s
build	14m 2s
dispatch (enonic/app-xp-welcome)	4s
dispatch (enonic/app-standardidprovider)	6s
dispatch (enonic/app-admin-home)	6s
dispatch (enonic/app-users)	4s
dispatch (enonic/app-applications)	5s
	14m 37s

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