Update GoogleTest used to 1.17.0 (#570)

Author: mcbarton

cmake/modules/GoogleTest.cmake

@@ -36,7 +36,7 @@ ExternalProject_Add(
   googletest
   GIT_REPOSITORY https://github.com/google/googletest.git
   GIT_SHALLOW 1
-  GIT_TAG v1.16.0
+  GIT_TAG v1.17.0
   UPDATE_COMMAND ""
   # # Force separate output paths for debug and release builds to allow easy
   # # identification of correct lib in subsequent TARGET_LINK_LIBRARIES commands