Fix prometheus-operator’s git sha to use v0.30.0

jsonnetfile.lock.json

...theus-operator-0alertmanagerCustomResourceDefinition.yaml

...metheus-operator-0prometheusCustomResourceDefinition.yaml

...eus-operator-0prometheusruleCustomResourceDefinition.yaml

...eus-operator-0servicemonitorCustomResourceDefinition.yaml

manifests/0prometheus-operator-clusterRole.yaml

manifests/0prometheus-operator-clusterRoleBinding.yaml

manifests/0prometheus-operator-deployment.yaml

manifests/0prometheus-operator-service.yaml

manifests/0prometheus-operator-serviceAccount.yaml

manifests/0prometheus-operator-serviceMonitor.yaml