* Support running multiple instances without collision

This uses a combination of three Github-set env vars that, together, are
guaranteed to be unique within the scope of a repo and all its
workflows:

- GITHUB_WORKFLOW: the name of the workflow (or file path, if no name is given)
- GITHUB_JOB: the ID of the job
- GITHUB_ACTION: the ID of the step (or a formatted name of the repo
  where the action resides, i.e.
  `__mheap_github-action-required-labels`)

Without this, running multiple instances of this action with comments
enabled would result in them clobbering each others' comments.

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Co-authored-by: Michael Heap <m@michaelheap.com>

* Add Node 20 to CI
* Run npm lint:fix
* Bump dependencies

Fixes #75

add output 'status' for github action linting

* Update all deps
* Reformat based on prettier

* Add support for merge_queue events
* fix: merge-queue support (#85)
* Fix merge_group tests

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Co-authored-by: Victor Martinez <victormartinezrubio@gmail.com>