Draft: Add Uncategorized Handling tickets workflows to Collaboration subcategory

Why is this change being made?

There are 15 "Uncategorized" Support workflows for Handling Tickets, but at least five of them are mostly to do with different ways to work in collaboration with others. This MR adds subcategory: Collaboration to those which logically belong together with Fieldnote Issues in the Collaboratoin sub category of the Handling tickets Category within the Support Workflows.

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
  • Copy/paste the Slack conversation to document it for later, or upload screenshots. Verify that no confidential data is added.
• Assign reviewers for this MR to the correct Directly Responsible Individual/s (DRI)
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the Maintained by section on the page being edited
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies
• If the changes affect team members, or warrant an announcement in another way, please consider posting an update in #whats-happening-at-gitlab linking to this MR
  • If this is a change that directly impacts the majority of global team members, it should be a candidate for #company-fyi. Please work with internal communications and check the handbook for examples.

---