Update common Prometheus files (#430) #330

Job	Run time
Build (0)	2m 59s
Build (1)	2m 43s
Build (2)	3m 12s
Build (3)	2m 14s
Go tests	1m 33s
Publish main branch artifacts	5m 15s
Publish release artefacts	0s
	17m 56s

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