[BUILD] Test closing stale PRs

[srowen]

What changes were proposed in this pull request?

Here I'm seeing if we can close stale PRs via a PR message, as I'd expect.
See thread https://www.mail-archive.com/[email protected]/msg14149.html

Closes #9354
Closes #9451
Closes #10507
Closes #10486
Closes #10460
Closes #10967
Closes #10681
Closes #11766
Closes #9907
Closes #10209
Closes #10379
Closes #10403
Closes #10842
Closes #11036
Closes #13003
Closes #10887

How was this patch tested?

(No changes)

[HyukjinKwon]

+1

[HyukjinKwon]

Do you mind adding #13003 maybe?

[SparkQA]

Test build #58375 has finished for PR 13052 at commit b81422f.

• This patch fails Spark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[srowen]

@HyukjinKwon that's already in the description. I'm ignoring the failure since there is no change to anything at all here.

[srowen]

Merged to master. Let's see if it worked.

[srowen]

PS for anyone who tries this -- it does work, but to make the merge script work with an empty commit, its git commit command needs --allow-empty. I didn't actually suggest changing the script since we generally don't want to allow that, I think.