Find GzURDFDOM, fix warning

[scpeters]

🦟 Bug fix

Fix deprecation warning from gazebosim/gz-cmake#273

Summary

https://build.osrfoundation.org/view/ign-garden/job/sdformat-ci-main-focal-amd64/100/cmake/

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.

[adityapande-1995]

Are the pragma warnings related to the changes here ?

[codecov]

Codecov Report

Merging #1074 (1d75062) into main (a92a354) will increase coverage by 16.45%.
The diff coverage is 77.51%.

@@             Coverage Diff             @@
##             main    #1074       +/-   ##
===========================================
+ Coverage   66.66%   83.12%   +16.45%     
===========================================
  Files           2      154      +152     
  Lines          27    18702    +18675     
===========================================
+ Hits           18    15546    +15528     
- Misses          9     3156     +3147     

Impacted Files	Coverage Δ
include/sdf/Exception.hh	100.00% <ø> (ø)
include/sdf/Filesystem.hh	100.00% <ø> (ø)
include/sdf/InterfaceElements.hh	75.00% <ø> (ø)
include/sdf/Param.hh	80.72% <ø> (ø)
include/sdf/Plugin.hh	93.75% <ø> (ø)
include/sdf/Types.hh	100.00% <ø> (ø)
python/src/sdf/pyAtmosphere.cc	60.00% <ø> (ø)
src/SDFExtension.hh	100.00% <ø> (ø)
src/Utils.hh	94.73% <ø> (ø)
python/src/sdf/pyRoot.cc	55.73% <33.33%> (ø)
... and 235 more

---

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[scpeters]

Are the pragma warnings related to the changes here ?

oops, there was a typo: see 1d75062