Add Migration warning to loki chart #2068

Job	Run time
Check whether there are things to scan	4s
Run zizmor / job-workflow-ref	15s
Run zizmor / Generate and upload zizmor results 🌈	25s
Run zizmor / Send zizmor metrics to Prometheus via Grafana Bench	0s
Run zizmor / Delete branch with dangerous-trigger vulnerability	0s
	44s

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