Update

[ghstack-poisoned]

Author: GregoryComer

.github/workflows/nightly.yml

@@ -46,7 +46,7 @@ jobs:
         suite: [models, operators]
     with:
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
-      runner: linux.2xlarge
+      runner: linux.4xlarge.memory
       docker-image: ci-image:executorch-ubuntu-22.04-clang12
       submodules: recursive
       timeout: 90