Tekton Dashboard and Webhooks Extension release v0.6.1.6

This contains a bug fix only for the webhooks extension - the Dashboard yaml/image is unchanged from v0.6.1.5, so you're welcome to use that still if you're not planning to use the extension. This release ensures the correct namespace is used for the monitor TaskRun and its resources on OpenShift. This isn't marked as a proper release simply because you may be content not picking it up if you are not using the webhooks extension.

Credits:

• @JustinKuli 😻
• @a-roberts 😻
• @Megan-Wright 😻