Ubuntu Jammy CI

[chapulina]

🎉 New feature

Summary

Enable Jammy CI so we can test using the latest tooling.

One downside of doing it this early is that we don't have Jammy packages on https://packages.osrfoundation.org yet, so we have to rely on the upstream version of ign-cmake. Because the upstream package has a different name, that forces us to split the dependencies for Bionic / Focal / Jammy. Once we have libignition-cmake2-dev on our repo, I think we should use that on CI and revert the changes to packages*.apt.

That's to say I'm not convinced it's a good idea to merge this PR now, but I thought I'd open it to start a conversation.

Test it

See CI results.

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge

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[codecov]

Codecov Report

Merging #297 (fbc638e) into ign-math6 (afd0b22) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           ign-math6     #297   +/-   ##
==========================================
  Coverage      99.65%   99.65%           
==========================================
  Files             67       67           
  Lines           6359     6359           
==========================================
  Hits            6337     6337           
  Misses            22       22           

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[scpeters]

already merged in #378