revertme: (AppMap) Enable install-action to commit to the branch #53

	The updated workflow is:

	```yaml
Check failure on line 3 in .github/workflows/main.yml View workflow run for this annotation GitHub Actions / .github/workflows/main.yml Invalid workflow file `You have an error in your yaml syntax on line 3`
	name: Main

	on:
	pull_request:

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	ref: ${{ github.event.pull_request.head.ref }}

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	bundler-cache: true

	- name: Run tests
	run: bundle exec rails test
	```
	This will checkout the specific ref from the pull request.

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