[gtk: 2/3] CI: Switch to 64bit mingw for the MSYS2 job

[Matthias Clasen <matthiasc src gnome org>]

commit f16b34f286baeb812f3d8c0a7c9a00fb6684f1c3
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Sun Jun 14 20:02:46 2020 +0200

    CI: Switch to 64bit mingw for the MSYS2 job
    
    64 bit is more common now and also tests more things because
    sizeof(glong) != sizeof(gpointer)

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1f9cd0f906..a4465cff4f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -110,10 +110,10 @@ release-build:
       - subprojects/libepoxy/
       - subprojects/pango/
 
-msys2-mingw32:
+msys2-mingw64:
   extends: .mingw-defaults
   variables:
-    MSYSTEM: "MINGW32"
+    MSYSTEM: "MINGW64"
     CHERE_INVOKING: "yes"
 
 .flatpak-defaults: