update links to openmetrics to reference the v1.0.0 release #2853

Job	Run time
php (8.1, false)	2m 3s
php (8.2, false)	2m 29s
php (8.3, false)	2m 40s
php (8.4, false)	1m 13s
php (8.5, true, --ignore-platform-reqs)	12m 40s
packages	0s
	21m 5s

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