Bump cmake requirement to 3.10

Avoid this message from newer cmake:

Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

Signed-off-by: Matt Liberty <[email protected]>

Author: maliberty

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5.0)
+cmake_minimum_required(VERSION 3.10.0)
 
 include(CMakeParseArguments)
 include(CheckCCompilerFlag)
@@ -132,4 +132,4 @@ if(NOT DEFINED ABC_SKIP_TESTS)
     FetchContent_MakeAvailable(googletest)
     include(GoogleTest)
     add_subdirectory(test)
-endif()
+endif()