message: ci: Add a job to nag when changesets are missing
  Mergify will now add a comment asking if you forgot a changeset if you change TS, Go, or JS code without adding one.
diff: @@ -97,3 +97,12 @@ pull_request_rules:
  label:
  remove:
  - on-merge-train
  + - name: Nag changesets
  + conditions:
  + - and:
  + - 'files~=\.(ts|go|js|mod|sum)$'
  + - '-files~=^\.changeset/(.*)\.md'
  + actions:
  + comment:
  + message: |
  + This PR changes implementation code, but doesn't include a changeset. Did you forget to add one?
  