Introduce workflow that automatically closes pull requests

[desrosj]

This introduces a workflow that finds pull requests referencing any fixed tickets in commit messages.

Trac ticket: https://core.trac.wordpress.org/ticket/62817

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props desrosj, swissspidy, peterwilsoncc.

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[desrosj]

This is difficult to test, however I've tested pretty extensively in my fork.

[github-actions]

Test using WordPress Playground

The changes in this pull request can previewed and tested using a WordPress Playground instance.

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• The Plugin and Theme Directories cannot be accessed within Playground.
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  it's possible that the most recent build failed, or has not completed. Check the list of workflow runs to be sure.

For more details about these limitations and more, check out the Limitations page in the WordPress Playground documentation.

Test this pull request with WordPress Playground.

[peterwilsoncc]

I think the GitHub link in the comment will need to use the full URL for the trac integration in order to show links.

But let me test to be sure:
Trac reference via r prefix: r59656
Trac prefix linked: r59656
GH Hash only: ab4b4eb
GH Link: ab4b4eb

If I am not confused by how the integration works, this should show up as https://core.trac.wordpress.org/ticket/62817#comment:4

[swissspidy]

Clever!

[swissspidy]

I think the GitHub link in the comment will need to use the full URL for the trac integration in order to show links.

You mean the full link to the commit hash, not just ${{ github.sha }}?

[swissspidy]

I like it!

[desrosj]

Testing one other GH commit link format:

GH Link: ab4b4eb55d14feb74d34647c7aa4eb370dbd87a8

[github-actions]

A commit was made that fixes the Trac ticket referenced in the description of this pull request.

SVN changeset: 59661
GitHub commit: 5e74d34

This PR will be closed, but please confirm the accuracy of this and reopen if there is more work to be done.

[desrosj]

@peterwilsoncc It looks like the comment did not make its way to Trac. I think that is likely due to the fact that we're ignoring comments from the GitHub Actions bot to avoid the playground and other comments from being posted on Trac tickets.

I think this is probably fine, but wanted to make sure there are no strong feelings otherwise.

[johnbillion]

I think that's preferable! Saves unnecessary noise on the ticket.