Add dart-bullet dependency to CI

[chapulina]

🦟 Bug fix

Summary

Needed to fix building from source.

I'm not sure why CI didn't catch this on #225.

Checklist

• Signed all commits for DCO
• Added tests
• 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

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[codecov]

Codecov Report

Merging #239 (830c2cd) into main (b10a4c3) will not change coverage.
The diff coverage is n/a.

❗ Current head 830c2cd differs from pull request most recent head 3c0a038. Consider uploading reports for the commit 3c0a038 to get more accurate results

@@           Coverage Diff           @@
##             main     #239   +/-   ##
=======================================
  Coverage   82.23%   82.23%           
=======================================
  Files         109      109           
  Lines        4396     4396           
=======================================
  Hits         3615     3615           
  Misses        781      781           

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[adlarkin]

Works for me on Focal. Let me check Bionic to be extra safe. Stay tuned...

[scpeters]

we may need to update the debian metadata for focal since the most recent nightly build failed

• https://build.osrfoundation.org/job/ign-physics4-debbuilder/253/

[adlarkin]

we may need to update the debian metadata for focal since the most recent nightly build failed

I went ahead and made a PR with a potential fix in gazebo-release/ign-physics4-release#7 if you would like to take a look.