SDL_net: ci: bump actions/checkout and don't specify ninja version (51ad6)

SDL Commits
1 
From 51ad601e2d87e17cf713edb2b7750c9011ebb104 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sat, 14 Dec 2024 21:45:56 +0100
Subject: [PATCH] ci: bump actions/checkout and don't specify ninja version

---
 cmake/PrivateSdlFunctions.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/PrivateSdlFunctions.cmake b/cmake/PrivateSdlFunctions.cmake
index b30f380..1f3786c 100644
--- a/cmake/PrivateSdlFunctions.cmake
+++ b/cmake/PrivateSdlFunctions.cmake
@@ -276,7 +276,7 @@ macro(sdl_check_linker_flag flag var)
 endmacro()
 
 function(sdl_target_link_options_no_undefined TARGET)
-    if(NOT MSVC)
+    if(NOT MSVC AND NOT CMAKE_SYSTEM_NAME MATCHES ".*OpenBSD.*")
         if(CMAKE_C_COMPILER_ID MATCHES "AppleClang")
             target_link_options(${TARGET} PRIVATE "-Wl,-undefined,error")
         else()