Tests: Update cmake_minimum_required versions in a few tests

Tests/CMakeTests/EndStuffTestScript.cmake

@@ -22,7 +22,7 @@ elseif(testname STREQUAL bad_endfunction) # fail
   do_end("endfunction()\n")
 
 elseif(testname STREQUAL bad_endif) # fail
-  do_end("cmake_minimum_required(VERSION 2.8.12)\nendif()\n")
+  do_end("cmake_minimum_required(VERSION 3.5)\nendif()\n")
 
 elseif(testname STREQUAL endif_low_min_version) # fail
   do_end("cmake_minimum_required(VERSION 1.2)\nendif()\n")

Tests/CheckFortran.cmake

@@ -7,7 +7,7 @@ if(NOT DEFINED CMAKE_Fortran_COMPILER)
   message(STATUS ${_desc})
   file(REMOVE_RECURSE ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CheckFortran)
   file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CheckFortran/CMakeLists.txt"
-    "cmake_minimum_required(VERSION 2.8.12)
+    "cmake_minimum_required(VERSION 3.5)
 project(CheckFortran Fortran)
 file(WRITE \"\${CMAKE_CURRENT_BINARY_DIR}/result.cmake\"
   \"set(CMAKE_Fortran_COMPILER \\\"\${CMAKE_Fortran_COMPILER}\\\")\\n\"

Tests/CustomCommandByproducts/External/CMakeLists.txt

-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
 project(External C)
 
 add_library(ExternalLibrary STATIC ExternalLibrary.c)