Update auto-approve.yml

Author: cainelli

.github/workflows/auto-approve.yml

@@ -12,7 +12,7 @@ permissions:
 
 jobs:
   auto-approve:
-    runs-on: [self-hosted, go-small]
+    runs-on: [ubuntu-latest]
     if: ${{ github.actor == 'dependabot[bot]' }}
     steps:
       - name: Approve Dependabot PR