[CI] AWS timeout to 60 minutes

Author: rengolin

.github/workflows/tpp-graviton.yml

@@ -35,6 +35,7 @@ jobs:
 
   TPP-MLIR-ARM:
     runs-on: [ self-hosted, graviton ]
+    timeout-minutes: 60
     # if: |
     #   (github.event_name == 'push') || (github.event_name == 'workflow_dispatch') ||
     #   (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'arm')) ||