fix(GRO-206): CTO review fixes — active filter on super user count + CI TAG fix

- Add active=true filter to all 3 super user count queries in staff.ts
  (revoke, deactivate, delete) so inactive super users aren't counted
- Fix ci.yml deploy step: use steps.version.outputs.tag instead of
  invalid github.sha::7 expression
- Remove GRO-206 CI trigger junk line from README.md

Co-Authored-By: Paperclip <noreply@paperclip.ing>

README.md

@@ -215,4 +215,3 @@ All PRs require CI to pass before merge. See [CONTRIBUTING.md](./CONTRIBUTING.md
 ## License
 
 AGPL-3.0
-# GRO-206 CI trigger