build(cmake): upgrade googletest to v1.14.0

[xatier]

The pinned version [1] is quite old from Feb 2021.

[1] google/googletest@6092810

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IMO, using the tagged version is better than using the SHA hash. Hence, I used the tagged version instead of SHA hash instructed from googletest README.

Note: It's interesting that Google folks forgot to bump the SHA hash during 12 -> 13 and 13 -> 14 bumps.

google/googletest@9d697cc
google/googletest@843976e

The current SHA hash in README (5376968f6948923e2411081fd9372e71a59d8e77) was from 11 -> 12 bump.

google/googletest@b9d2e1f

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CMake added this warning since 3.27 (I'm using 3.27.9 on my Arch box).

Ref: https://gitlab.kitware.com/cmake/cmake/-/blob/master/Help/command/DEPRECATED_POLICY_VERSIONS.txt?ref_type=heads

CMake Deprecation Warning at build/_deps/googletest-src/CMakeLists.txt:4 (cmake_minimum_required):
  Compatibility with CMake < 3.5 will be removed from a future version of
  CMake.  

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.
                                                                                    
                                                                                                                                                                         
CMake Deprecation Warning at build/_deps/googletest-src/googlemock/CMakeLists.txt:45 (cmake_minimum_required):
  Compatibility with CMake < 3.5 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


CMake Deprecation Warning at build/_deps/googletest-src/googletest/CMakeLists.txt:56 (cmake_minimum_required):
  Compatibility with CMake < 3.5 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.

GoogleTest 1.14 requires CMake 3.13.
Ubuntu 22 provides CMake 3.22.1.
Ubuntu 20 provides CMake 3.16.3.

[xatier]

@lukhnos another fix for CMake warning on my box.

Eventually, we should use FindGTest (since CMake 3.20) once we deprecate Ubuntu 20 from the CI.
https://cmake.org/cmake/help/latest/module/FindGTest.html

[lukhnos]

Thanks!

Eventually, we should use FindGTest (since CMake 3.20) once we deprecate Ubuntu 20 from the CI.

Makes sense. The more we rely on built-ins the better.

[xatier]

Now I noticed that I meant upgrade googletest to v.1.14.0, not upgrade cmake to v1.14.0. My bad 😛