Update fluxcd/image-reflector-controller Docker tag to v0.9.1

This MR contains the following updates:

Package	Type	Update	Change
fluxcd/image-reflector-controller	ironbank-docker	patch	v0.9.0 -> v0.9.1
fluxcd/image-reflector-controller		patch	v0.9.0 -> v0.9.1
fluxcd/image-reflector-controller	stage	patch	v0.9.0 -> v0.9.1

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