Bump main to sdformat 16.0.0~pre1

[caguero]

🎉 New feature

Summary

Bump main to sdformat 16.0.0~pre1

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• 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.

[iche033]

test fixing macOS github ci workflow: e4a4c68

[scpeters]

test fixing macOS github ci workflow: e4a4c68

that is a good fix, but the problem appears to be that homebrew added python@3.13 and our homebrew formula builds python bindings for gz-math8 with python@3.12 (see gz-math8.rb:23), but now cmake is finding python 3.13 when searching for the interpreter so tests fail when they can't find the gz-math8 bindings

We've faced this before; I think we can hard-code which python version we want to find, let me see if I can find it

[scpeters]

We've faced this before; I think we can hard-code which python version we want to find, let me see if I can find it

I think we need an adjustment to the -DPython_EXECUTABLE=... cmake arg to point to the version of python that we currently support

some homebrew formula build bindings for multiple versions of python, but that seems a bit complicated

[scpeters]

We've faced this before; I think we can hard-code which python version we want to find, let me see if I can find it

I think we need an adjustment to the -DPython_EXECUTABLE=... cmake arg to point to the version of python that we currently support

some homebrew formula build bindings for multiple versions of python, but that seems a bit complicated

I've opened osrf/homebrew-simulation#2834 to track this issue

[iche033]

the homebrew python issue is being addressed separately. Merging this in first.