macOS: run tests with ogre2

[scpeters]

🦟 Bug fix

Fixes #

Summary

The gz-sensors tests have used ogre 1.9 on macOS since Fortress (see #156), but since we have dropped support for ogre 1.9 on macOS in the rotary, try switching these tests back to ogre2.

Checklist

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• Added tests
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• Updated migration guide (as needed)
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