Update GoogleTest to latest version

[mjcarroll]

Import latest version of GoogleTest from upstream and adjust build accordingly.

Signed-off-by: Michael Carroll michael@openrobotics.org

[codecov]

Codecov Report

Merging #435 (68fc596) into main (0919a13) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #435   +/-   ##
=======================================
  Coverage   99.69%   99.69%           
=======================================
  Files          73       73           
  Lines        6567     6567           
=======================================
  Hits         6547     6547           
  Misses         20       20           

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[mjcarroll]

I'm going to hold off and see if there are any more changes uncovered when doing the other libraries.

[chapulina]

Would it be possible to target this at ign-math6? I'm working on some tests that only pass with these changes 😬

[mjcarroll]

I'm working on some tests that only pass with these changes.

Likely yes, but what kind of tests out of curiosity?