Update badge to noble

[azeey]

🦟 Bug fix

Summary

This is also being used to test gazebo-tooling/gzdev#88

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• 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 and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[azeey]

@scpeters it looks like changes in gazebo-tooling/gzdev#88 are okay. From https://build.osrfoundation.org/job/gz_utils-ci-pr_any-noble-amd64/25/consoleFull

#15 [11/44] RUN /home/jenkins/workspace/gz_utils-ci-pr_any-noble-amd64/gzdev/gzdev.py repository enable --project=gz-utils3 --force-linux-distro=noble || ( git -C /home/jenkins/workspace/gz_utils-ci-pr_any-noble-amd64/gzdev pull origin master &&     if [ -n ci_matching_branch/add_ionic_prereleases ]; then git -C /home/jenkins/workspace/gz_utils-ci-pr_any-noble-amd64/gzdev checkout ci_matching_branch/add_ionic_prereleases; fi || true &&     /home/jenkins/workspace/gz_utils-ci-pr_any-noble-amd64/gzdev/gzdev.py repository enable --project=gz-utils3 --force-linux-distro=noble )
...
#15 2.327 Reading package lists...
#15 3.033 Get:1 http://packages.osrfoundation.org/gazebo/ubuntu-prerelease noble InRelease [4252 B]
#15 3.038 Hit:2 http://packages.osrfoundation.org/gazebo/ubuntu-stable noble InRelease
#15 3.075 Get:3 http://packages.osrfoundation.org/gazebo/ubuntu-prerelease noble/main amd64 Packages [39.6 kB]