Bug 1758301 - devtools-bundle task times out when a hg clone happens r=jmaher

hg clone takes around 10mn so a task timeout of 600s will intermittently lead to timeouts

Differential Revision: https://phabricator.services.mozilla.com/D140458

taskcluster/ci/source-test/node.yml

@@ -134,7 +134,7 @@ devtools-verify-bundle:
     worker-type: t-linux-xlarge-source
     worker:
         docker-image: {in-tree: "lint"}
-        max-run-time: 600
+        max-run-time: 1200
     run:
         using: run-task
         cache-dotcache: true