Run the correct script in retire.yml

It was tested with the right one originally: https://github.com/Infinisil-s-Test-Organization/nixpkgs-committers/blob/main/.github/workflows/retire.yml#L39-L40

Author: infinisil

.github/workflows/retire.yml

@@ -35,6 +35,6 @@ jobs:
         with:
           token: ${{ steps.app-token.outputs.token }}
       - name: Run script
-        run: scripts/sync.sh NixOS nixpkgs nixpkgs-committers members
+        run: scripts/retire.sh NixOS nixpkgs nixpkgs-committers members
         env:
           GH_TOKEN: ${{ steps.app-token.outputs.token }}