Update Deprecations template to ensure label assignment

What does this MR do and why?

The format of the suggested labels created a situation where the labels following the suggested scoped labels and empty milestone would not be applied.

This MR will ensure the labels are assigned and adds a Todo item to apply the suggested labels and milestone.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.