chore(actions): don’t repeat-recent-requests on forks (#259)

I received a notification about a failed workflow run on my fork of this
repository:

*
https://github.com/marcalexiei/github-stats-extended/actions/runs/26996444955

It looks like the `repeat-recent-requests` workflow is being triggered
on forks, even though it should only run on the canonical repositories.
This PR adds an `if` condition to prevent it from running on forks.

The condition matches the one already used in the `update-languages`
workflow:


https://github.com/stats-organization/github-stats-extended/blob/96d141e8c717f42a1a29e67f64984a19182dd575/.github/workflows/update-langs.yml#L31-L36

---

Additionally, this PR renames `update_tags.yml` to `update-tags.yml` for
consistency with the repository's workflow naming convention.

.github/workflows/repeat-recent-requests.yml

@@ -15,6 +15,10 @@ on:
 
 jobs:
   triggerRepeatRecent:
+    if: |
+      github.repository == 'anuraghazra/github-readme-stats' ||
+      github.repository == 'stats-organization/github-readme-stats' ||
+      github.repository == 'stats-organization/github-stats-extended'
     name: Trigger server to update cached data.
     runs-on: ubuntu-latest
     steps: