Use v4 of pnpm/action-setup as that is used in another workflow

Author: barslev

.github/workflows/provenance.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
+      - uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2 # v4.0.0
         with:
           version: 10
           run_install: false