build: Update cmake_minimum_required(VERSION 3.11.3)

Change-Id: Ie05eeb1d7b880c20bd8c283b7fcc7c120d6f97eb
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a64e51a..76fc7fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@
 # limitations under the License.
 # ~~~
 
-cmake_minimum_required(VERSION 3.4)
+cmake_minimum_required(VERSION 3.11.3)
 
 # Apple: Must be set before enable_language() or project() as it may influence configuration of the toolchain and flags.
 set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")