feat(build): Fix CMake < 3.5 compatibility warning

I'm just interested in keeping CMake 3.3 support for easier building
on OSX 10.4.

CMakeLists.txt

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: MIT
 
-cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.3..3.5 FATAL_ERROR)
 
 # Don't export symbols, unless ENABLE_EXPORTS is used
 if(POLICY CMP0065)