Update more

.github/workflows/prune-old-images.yml

@@ -1,4 +1,5 @@
 on:
+  workflow_dispatch:
   schedule:
     - cron: "32 * * * *"
 
@@ -9,9 +10,8 @@ jobs:
     steps:
       - uses: snok/[email protected]
         with:
-          account: rollbear
+          account: user
           token: ${{ secrets.GITHUB_TOKEN }}
-          image-names: "gcc clang"
           tag-selection: untagged
           cut-off: 4w
           dry-run: true