Upgrade GitLab review-apps helm chart to 6.11.5

David Dieulivolrequested to merge
ddieulivol-upgrade_gitlab_helm_chart_review_apps_6.11.x into master

Context

Related to #412629 (closed)

What does this MR do?

Upgrade GitLab helm chart from 6.10.x to 6.11.x.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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