ci: cron stale workflow

Author: smol-ninja

.github/workflows/stale.yml

@@ -1,11 +1,11 @@
-name: "Close stale issues and PRs"
+name: "Cron: Close Stale Issues and PRs"
 
 on:
   schedule:
     - cron: "0 3 * * 0" # at 3:00am UTC every Sunday
 
 jobs:
   stale:
-    uses: "sablier-labs/reusable-workflows/.github/workflows/stale.yml@main"
+    uses: "sablier-labs/gha-utils/.github/workflows/cron-stale.yml@main"
     with:
       days-before-issue-stale: 365