ci: use ubuntu-latest runner for agent-eval workflow

Author: vishalg0wda

.github/workflows/agent-eval.yml

@@ -52,7 +52,7 @@ on:
 
 jobs:
   agent-eval:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
       - name: Checkout