binder-badge can use new pull_request_target

[manics]

binder-badge.yml will now work with pull requests from forks, using the new pull_request_target. the action is also changed to use the commit sha instead of the branch name- since it's automatically run after every push to a PR this probably makes more sense than repeatedly posting a badge with the same branch name.

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[manics]

See an example on https://github.com/manics/idr0083-sars-cov2-notebook/pull/5

@hamelsmu this uses pull_request_target: https://github.blog/2020-08-03-github-actions-improvements-for-fork-and-pull-request-workflows/#improvements-for-public-repository-forks

[hamelsmu]

Yep can confirm this works. This feature came out yesterday. Cheers

[choldgraf]

gah this is cool!

[hamelsmu]

@choldgraf can we merge this?

[choldgraf]

I don't know the infra on this one super well so am probably not best to say if (technically-speaking) it's good to merge, but I trust y'alls judgment 👍

[hamelsmu]

@choldgraf you are going to have to push the button, I don't have the permissions

[choldgraf]

🤦‍♂️ my bad!

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