main: Update actions/stale digest to 128b2c8 (#2053)

Author: renovate-bot

.github/workflows/stale.yml

@@ -22,7 +22,7 @@ jobs:
   stale:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/stale@f78de9780efb7a789cf4745957fa3374cbb94fd5
+      - uses: actions/stale@128b2c81d01bedfe5b59d56fc08176aecd3fe6b9
         with:
           days-before-close: 5
           days-before-stale: 30