message: ci: Fix merge bug in CircleCI YAML
  I encountered merge conflicts in the CircleCI YAML, and missed a stanza that builds proxyd.
diff: @@ -196,6 +196,11 @@ workflows:
  - optimism
  - slack
  <<: *slack-fail-post-step
  + - build-proxyd:
  + context:
  + - optimism
  + - slack
  + <<: *slack-fail-post-step
  - deploy-nightly:
  context:
  - optimism
  