[tools] Update Debian compat version

[tyler-yankee]

See https://manpages.debian.org/testing/debhelper/debhelper-compat-upgrade-checklist.7.en.html; v9 is deprecated, v13 is currently recommended.

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This change is 

[tyler-yankee]

@drake-jenkins-bot linux-noble-unprovisioned-gcc-cmake-experimental-packaging please.

[tyler-yankee]

+a:@mwoehlke-kitware for feature review, please. (I imagine mostly just sanity checking CI results and the linked Debian changelog for any sharp edges?)

@tyler-yankee made 1 comment.
Reviewable status: LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers, missing label for release notes (waiting on @tyler-yankee).

[jwnimmer-tri]

BTW I wouldn't bother with trying to read the changelog. Instead, I would diff the *.deb contents before and after this PR.

[tyler-yankee]

$ debdiff drake-dev_0.0.20260202.142715+gite70fb8ec-1_amd64-noble.deb drake-dev_latest-1_amd64-noble.deb
File lists identical (after any substitutions)

Control files: lines which differ (wdiff format)
------------------------------------------------
Version: [-0.0.20260202.142715+gite70fb8ec-1-] {+0.0.20260203-1+}

@tyler-yankee made 1 comment.
Reviewable status: LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers.

[tyler-yankee]

ping @mwoehlke-kitware as a reminder to please review when you have time (low priority), thanks!

@tyler-yankee made 1 comment.
Reviewable status: LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers.

[mwoehlke-kitware]

What actually needs to be done here, review-wise? I don't really know anything about .deb packaging, so I can't do much more than rubber-stamp the actual changes. And IIUC "diff the *.deb contents before and after" has been done?

[tyler-yankee]

Thanks, wasn't sure if you'd have any input/experience here but wanted a second set of eyes in any case. I'm definitely no expert here either. However, I'd like to stay away from the deprecation warning, and I'm mostly relying on CI being green plus the diff.

@tyler-yankee made 1 comment.
Reviewable status: LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers.

[tyler-yankee]

To be safe we can also just wait to merge this until later this week, after the release.

@tyler-yankee made 2 comments.
Reviewable status: 1 unresolved discussion, LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers.

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a discussion (no related file):
Working

I can test this tomorrow with DEE drake_cmake_installed_apt GHA; IIRC we set that up to be able to run with experimental .deb files.

[tyler-yankee]

@tyler-yankee made 1 comment and resolved 1 discussion.
Reviewable status: LGTM missing from assignee mwoehlke-kitware, needs platform reviewer assigned, needs at least two assigned reviewers.

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a discussion (no related file):

Previously, tyler-yankee (Tyler Yankee) wrote…

Working

I can test this tomorrow with DEE drake_cmake_installed_apt GHA; IIRC we set that up to be able to run with experimental .deb files.

https://github.com/RobotLocomotion/drake-external-examples/actions/runs/22106598878 is 🟢 using the .tar.gz and .deb from https://drake-jenkins.csail.mit.edu/job/linux-noble-unprovisioned-gcc-cmake-experimental-packaging/job/PR-24049/2/

[mwoehlke-kitware]

I'm going to say just so I'm not blocking, with the disclaimer that all I'm really saying is "updating the compat version seems like a reasonable thing to do, and it looks like this patch does that and doesn't have obvious coding errors".

@mwoehlke-kitware made 1 comment.
Reviewable status: needs platform reviewer assigned, needs at least two assigned reviewers.

[jwnimmer-tri]

@jwnimmer-tri reviewed 1 file and all commit messages, and made 1 comment.
Reviewable status: complete! all discussions resolved, LGTM from assignees jwnimmer-tri(platform),mwoehlke-kitware.