[Smoke Tests] Increase Timeout (Azure#19281)

The focus of these changes is to increase the timeout for smoke test
deployment and execution.  The Gov Clouds have been very, very slow when
deploying test resources, causing the run to timeout before tests can run.

Author: jsquire

common/SmokeTests/smoke-tests.yml

@@ -5,3 +5,4 @@ jobs:
   - template: /eng/pipelines/templates/jobs/smoke-tests.yml
     parameters:
       Daily: true
+      TimeoutInMinutes: 240