Update sonarqube Docker tag

This MR contains the following updates:

Package	Type	Update	Change
sonarqube		minor	10.7.0-datacenter-search -> 10.8.0-datacenter-search
sonarqube		minor	10.7-datacenter-search -> 10.8-datacenter-search
sonarqube	ironbank-docker	minor	10.7.0-datacenter-search -> 10.8.0-datacenter-search
sonarqube	stage	minor	10.7.0-datacenter-search -> 10.8.0-datacenter-search

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