Move CODEOWNERS to review teams (#7325)

# Description of Changes

CODEOWNERS now points at review teams (`maintainers`,
`backend-reviewers`, `frontend-reviewers`, `devops-reviewers`, `all`)
instead of individual usernames, so membership is managed in the org
rather than in this file. Ludy87 and balazs-szucs stay listed by hand
since outside collaborators cannot be team members. including the deploy
and demo-comment allowlists.

---

## Checklist

### General

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have run `task check` to verify linters, typechecks, and tests
pass
- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#7-testing)
for more details.

.github/workflows/PR-Auto-Deploy-V2.yml

@@ -86,7 +86,7 @@ jobs:
               fi
             fi
           else
-            auth_users=("Frooodle" "sf298" "Ludy87" "LaserKaspar" "sbplat" "reecebrowne" "DarioGii" "ConnorYoh" "EthanHealy01" "jbrunton96" "balazs-szucs")
+            auth_users=("Frooodle" "sf298" "Ludy87" "LaserKaspar" "sbplat" "reecebrowne" "ConnorYoh" "EthanHealy01" "jbrunton96" "balazs-szucs")
             is_auth=false; for u in "${auth_users[@]}"; do [ "$u" = "$PR_AUTHOR" ] && is_auth=true && break; done
             if [ "$is_auth" = true ]; then
               should=true

.github/workflows/PR-Demo-Comment-with-react.yml

@@ -54,7 +54,6 @@ jobs:
             github.event.comment.user.login == 'Ludy87' ||
             github.event.comment.user.login == 'balazs-szucs' ||
             github.event.comment.user.login == 'reecebrowne' ||
-            github.event.comment.user.login == 'DarioGii' ||
             github.event.comment.user.login == 'EthanHealy01' ||
             github.event.comment.user.login == 'jbrunton96' ||
             github.event.comment.user.login == 'ConnorYoh'