Changes

Sheriffs hang out in the [https://chat.mozilla.org/#/room/#sheriffs :mozilla.org sheriffs] channel on IRC Matrix - also it's useful to be in the following Channels:* [https://chat.mozilla.org/#/room/#cia:mozilla.org CI Automation]: For questions about test automation.* [https://chat.mozilla.org/#/room/#developers:mozilla.org developers]: To find developers or e.g. provide status updates on longer tree closures* [https://chat.mozilla.org/#/room/#firefox-ci:mozilla.org Firefox CI]: Escalate e.g. issues with hardware backlog here - the ones in the 'Hardware' table of the backlog dashboard* [https://chat.mozilla.org/#/room/#release-drivers:mozilla.org release-drivers]: Find the Release Managers (the people who approve beta uplifts) here and ask questions or escalate issues related to that* [https://chat.mozilla.org/#/room/#releaseduty:mozilla.org releaseduty]: For issues with tasks belonging to a release, e.g. the 'UV' ones on beta etc.* [https://chat.mozilla.org/#/room/#taskcluster:mozilla.org releng]: For general issues with the release build infrastructure* [https://chat.mozilla.org/#/room/#taskcluster:mozilla.org Taskcluster] - best to check #taskclouster-cloudops on Slack before if the Taskcluster system got updated* [https://chat.mozilla.org/#/room/#treeherder:mozilla.org treeherder]: The website to manage build, test and performance results