SDL_mixer: update vendored libgme (26858)

From 26858a123a3d42b840aa798d1de71d899cf126dc Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sun, 5 Nov 2023 01:05:10 +0300
Subject: [PATCH] update vendored libgme

---
 external/libgme | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/external/libgme b/external/libgme
index de51098d..a8bcafb6 160000
--- a/external/libgme
+++ b/external/libgme
@@ -1 +1 @@
-Subproject commit de51098d0cd7d193fab880aa736e9b6a6561fd56
+Subproject commit a8bcafb62593330931fa016c090e238375629427