Add `-ao 1` to yk-config invocations to get more optimisations. #37

	on:
	pull_request:
	merge_group:

	# This is required to silence emails about the workflow having no jobs.
	# We simply define a dummy job that does nothing much.
	jobs:
	dummy:
	runs-on: ubuntu-latest
	steps:
	- run: /usr/bin/true

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