Labels maintenance: restore deleted role missing label

[t-will-gillis]

Fixes #8157

What changes did you make?

• Removed unused label pFeatureRelatedCollateral
• Synced NEW-roleMissing with previous roleMissing

Why did you make the changes (we will use this info to test)?

• To keep the labels directory in sync

CodeQL Alerts

After the PR has been submitted and the resulting GitHub actions/checks have been completed, developers should check the PR for CodeQL alert annotations.

Check the PR's comments. If present on your PR, the CodeQL alert looks similar as shown

Please let us know that you have checked for CodeQL alerts. Please do not dismiss alerts.

• I have checked this PR for CodeQL alerts and none were found.
• I found CodeQL alert(s), and (select one):
  • I have resolved the CodeQL alert(s) as noted
  • I believe the CodeQL alert(s) is a false positive (Merge Team will evaluate)
  • I have followed the Instructions below, but I am still stuck (Merge Team will evaluate)

Instructions for resolving CodeQL alerts

If CodeQL alert/annotations appear, refer to How to Resolve CodeQL alerts.

In general, CodeQL alerts should be resolved prior to PR reviews and merging

Screenshots of Proposed Changes To The Website (if any, please do not include screenshots of code changes)

• No visual changes

[github-actions]

Want to review this pull request? Take a look at this documentation for a step by step guide!

---

From your project repository, check out a new branch and test the changes.

git checkout -b t-will-gillis-label-maintenance-8157 gh-pages
git pull https://github.com/t-will-gillis/website.git label-maintenance-8157

[t-will-gillis]

Merging this without review because this is a maintenance issue.