Fix cmake unrecognized argument warning

[azeey]

🦟 Bug fix

Summary

The following warning was caused by a missing VERSION flag

  The build script has specified some unrecognized arguments for
  gz_find_package(~):

  12.1

  Either the script has a typo, or it is using an unexpected version of
  gz-cmake.  The version of gz-cmake currently being used is 3.0.1

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.

[codecov]

Codecov Report

Merging #1882 (d1961ac) into gz-sim7 (5d35c5a) will not change coverage.
The diff coverage is n/a.

❗ Current head d1961ac differs from pull request most recent head 296b301. Consider uploading reports for the commit 296b301 to get more accurate results

@@           Coverage Diff            @@
##           gz-sim7    #1882   +/-   ##
========================================
  Coverage    64.57%   64.57%           
========================================
  Files          344      344           
  Lines        27578    27578           
========================================
  Hits         17808    17808           
  Misses        9770     9770           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.