Update jupyterhub/k8s-image-awaiter Docker tag to v1.0.1

This MR contains the following updates:

Package	Type	Update	Change
jupyterhub/k8s-image-awaiter	ironbank-docker	patch	1.0.0 -> 1.0.1
jupyterhub/k8s-image-awaiter		patch	1.0.0 -> 1.0.1
jupyterhub/k8s-image-awaiter	stage	patch	1.0.0 -> 1.0.1

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