Update stale.yml

Trying to run stale on self-hosted runner

Author: cmeissner

.github/workflows/stale.yml

@@ -15,7 +15,8 @@ permissions:
 
 jobs:
   stale:
-    runs-on: ubuntu-latest
+    # runs-on: ubuntu-latest
+    runs-on: [self-hosted, linux, x64]
     steps:
       - uses: actions/stale@v8
         with: