Add lefthook and bump Ruby version
What does this MR do and why?
This MR adds a few things to improve developer happiness
Action items
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(If applicable) Add documentation to the handbook pages for Triage Operations => - (If applicable) Identify the affected groups and how to communicate to them:
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/cc @ person_or_group
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Relevant Slack channels => -
Engineering week-in-review
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Edited by Ash McKenzie