File upgrade_cpp_to_17.patch of Package linuxdeploy-desktopfile

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3452905..9d8aec0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,8 +2,9 @@ cmake_minimum_required(VERSION 3.2)
 
 project(linuxdeploy-desktopfile CXX)
 
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake/Modules/")