build: update min cmake version (no patch value)

CMakeLists.txt

@@ -1,6 +1,6 @@
 # EnTT
 
-cmake_minimum_required(VERSION 3.28.6)
+cmake_minimum_required(VERSION 3.28)
 
 # Read project version
 

conan/test_package/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.28.6)
+cmake_minimum_required(VERSION 3.28)
 project(test_package)
 
 set(CMAKE_VERBOSE_MAKEFILE TRUE)