I can't see a way to do it, but fingers crossed I missed something.
Is there a way to easily make 32 repositories use my self-hosted runners without going through each and every step of each and every repository to add `runs-on`? Because if I have to do that grunt work, I'm already considering using Jenkins and webhooks instead of Bitbucket Pipelines.
I'd be happy with a script that can add the `runs-on` automatically for me, while also aware of YAML anchors so it doesn't add it at merge points and just to definitions.