SDL_image: ci, msys2: change autotools target from i686 to x86_64.

SDL Commits
1 
From f6317f654a93e3d7a614e4cf3c361772392d857c Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Mon, 28 Sep 2026 21:47:04 +0300
Subject: [PATCH] ci, msys2: change autotools target from i686 to x86_64.

msys no longer provides certain dependency libs for i686

(cherry picked from commit b69174826f97a7627724141af50d10ae1eca1a12)
---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 54ad2540f..f4c30035d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
       matrix:
         platform:
         - { name: 'Windows (MSVC+CMake)',       os: windows-latest, shell: sh, cmake: '-GNinja', msvc: 1, shared: 1, static: 0, vendored: 1 }
-        - { name: 'Windows (mingw32+autotools)',os: windows-latest, shell: 'msys2 {0}', msystem: mingw32, msys-env: mingw-w64-i686, shared: 1, static: 1 }
+        - { name: 'Windows (mingw64+autotools)',os: windows-latest, shell: 'msys2 {0}', msystem: mingw64, msys-env: mingw-w64-x86_64, shared: 1, static: 1 }
         - { name: 'Windows (mingw64+CMake)',    os: windows-latest, shell: 'msys2 {0}', msystem: mingw64, msys-env: mingw-w64-x86_64, shared: 1, static: 0,
             cmake: '-DSDL2IMAGE_BACKEND_STB=OFF -DSDL2IMAGE_BACKEND_WIC=OFF -G "Ninja Multi-Config"' }
         - { name: 'Linux (autotools)',          os: ubuntu-latest,  shell: sh, shared: 1, static: 1}