Bump cluster management project template version

Taka Nishidarequested to merge
609196-bump-cluster-management-template into master

What does this MR do and why?

Bump cluster management project template version by running bin/rake "gitlab:update_project_templates[cluster_management]".

This updates the cluster-applications image in the template from v2.13.0 to v2.14.0.

Changelog: changed

References

Part of Investigate Kubernetes 1.37 support (#609196 - closed).

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