Bug 1721729 - Increase decision task timeout to 60 minutes, r?#taskgraph-reviewers! CLOSED TREE

Decision task durations have been creeping over the 20 minute mark, which means
we no longer have a lot of leeway when things timeout (like waiting for
bugbug). Longer term we should focus on reducing Decision task duration, but
for now this is needed to re-open autoland.

Differential Revision: https://phabricator.services.mozilla.com/D120644

.taskcluster.yml

@@ -224,7 +224,7 @@ tasks:
                   # exist in tree so we must hard code the hash
                   image: 'mozillareleases/gecko_decision:3.0.1@sha256:9964730ed951584e65032bd1d6a2b7ede6d880a8b7aefb72d0d7f82346d834e3'
 
-                  maxRunTime: 1800
+                  maxRunTime: 3600
 
                   command:
                       - /builds/worker/bin/run-task