fix: allow build of google test on windows

Author: ObiWahn

tests/CMakeLists.txt

@@ -6,7 +6,7 @@ set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
 if (NOT TARGET gtest)
     if(EXT_DOWNLOAD)
         EXT_DECLARE_DEPENDENCIES()
-        FetchContent_MakeAvailable(GTest)
+        FetchContent_MakeAvailable(GoogleTest)
     else()
         find_package(GTest REQUIRED)
     endif()