chore: update repo pruner version

Author: arminbro

.github/workflows/repo-pruner.yml

@@ -9,9 +9,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Run Repo Pruner
-        uses: arminbro/repo-pruner@v1.0.3
+        uses: arminbro/repo-pruner@v1.0.4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          inactive_days: 30
+          inactive_days: 4
           base_branch: master