[AzureCI] Increase timeout of per PR and nightly pipeline to 240 mins (#2074)

[ROCm/rccl commit: db52690c2a]

projects/rccl/.azuredevops/multinode-ci-slurm-nightly.yml

@@ -28,7 +28,7 @@ schedules:
 
 jobs:
 - job: rccl
-  timeoutInMinutes: 180
+  timeoutInMinutes: 240
   pool: rocm-ci_rccl_slurm_pool
   workspace:
     clean: all

projects/rccl/.azuredevops/multinode-ci-slurm-pr.yml

@@ -33,7 +33,7 @@ stages:
     displayName: "CI Run Requires Approval"
     environment: rccl
   - job: rccl
-    timeoutInMinutes: 180
+    timeoutInMinutes: 240
     pool: rocm-ci_rccl_slurm_pool
     workspace:
       clean: all