CMake 3.15.6

Source/CMakeVersion.cmake

@@ -1,5 +1,5 @@
 # CMake version number components.
 set(CMake_VERSION_MAJOR 3)
 set(CMake_VERSION_MINOR 15)
-set(CMake_VERSION_PATCH 5)
+set(CMake_VERSION_PATCH 6)
 #set(CMake_VERSION_RC 0)