Update minio/k8s-operator Docker tag to v2.0.7

This MR contains the following updates:

Package	Type	Update	Change
minio/k8s-operator	ironbank-docker	patch	2.0.6 -> 2.0.7
minio/k8s-operator		patch	2.0.6 -> 2.0.7
minio/k8s-operator	stage	patch	2.0.6 -> 2.0.7

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