Made CMake 3.19 requirement specific to macOS app packaging.

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.19.0)
+cmake_minimum_required(VERSION 3.1.0)
 
 # for link time optimization, remove if cmake version is >= 3.9
 if(POLICY CMP0069) # LTO
@@ -799,8 +799,8 @@ endif()
 
 # Apple bundling
 if (OPENMW_OSX_DEPLOYMENT AND APPLE)
-    if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.13 AND CMAKE_VERSION VERSION_LESS 3.13.4)
-        message(FATAL_ERROR "macOS packaging is broken in early CMake 3.13 releases, see https://gitlab.com/OpenMW/openmw/issues/4767. Please use at least 3.13.4 or an older version like 3.12.4")
+    if (CMAKE_VERSION VERSION_LESS 3.19)
+        message(FATAL_ERROR "macOS packaging requires CMake 3.19 or higher to sign macOS app bundles.")
     endif ()
 
     get_property(QT_COCOA_PLUGIN_PATH TARGET Qt5::QCocoaIntegrationPlugin PROPERTY LOCATION_RELEASE)