Arm backend: Increase timeout of arm-test in trunk

Previously we were just a few minutes off the 90 minute timeout. With
per-channel quantizaiton enabled by defualt it seems that we exceed that
limit consistently. This patch increases the timeout to 120 minutes.

Change-Id: I20f3fb369329dd51e95ffec667617afe93c50aa3
Signed-off-by: Oscar Andersson <[email protected]>

Author: Martin Lindström

.github/workflows/trunk.yml

@@ -197,7 +197,7 @@ jobs:
       docker-image: executorch-ubuntu-22.04-arm-sdk
       submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
-      timeout: 90
+      timeout: 120
       script: |
         # The generic Linux job chooses to use base env, not the one setup by the image
         CONDA_ENV=$(conda env list --json | jq -r ".envs | .[-1]")