[nxp] trunk.yaml: download submodules recursively

Author: digantdesai

.github/workflows/trunk.yml

@@ -701,7 +701,7 @@ jobs:
     with:
       runner: linux.2xlarge
       docker-image: executorch-ubuntu-22.04-clang12
-      submodules: 'true'
+      submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       timeout: 90
       script: |