chore(deps): pin grafana/security-github-actions action to fbae154 #776

Job	Run time
Check whether there are things to scan	3s
Run zizmor / job-workflow-ref	18s
Run zizmor / Generate and upload zizmor results 🌈	28s
Run zizmor / Send zizmor metrics to Prometheus via Grafana Bench	11s
	1m 0s

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