[AUTO] Bump version on `1.x` to `1.8.0` #1531

Job	Run time
Integration OpenSearch (2.11.1)	6m 40s
Integration OpenSearch Unreleased (1.x)	6m 32s
Integration OpenSearch Unreleased (2.x)	10m 58s
Integration OpenSearch Unreleased (main)	6m 19s
Integration OpenSearch (2.10.0)	6m 26s
Integration OpenSearch (2.8.0)	6m 21s
Integration OpenSearch (2.6.0)	6m 36s
Integration OpenSearch (2.4.1)	6m 12s
Integration OpenSearch (2.2.1)	6m 16s
Integration OpenSearch (2.0.1)	6m 2s
Integration OpenSearch (1.3.14)	6m 18s
Integration OpenSearch (1.2.4)	6m 13s
Integration OpenSearch (1.1.0)	6m 5s
	1h 26m 58s

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