SDL_image: fix libpng branch name in .gitmodules after v1.6.47 upgrade (71d03)

From 71d0338e0cb0ccfe82d6b6f6fa91640436834b4a Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 26 Feb 2025 17:55:24 +0300
Subject: [PATCH] fix libpng branch name in .gitmodules after v1.6.47 upgrade

---
 .gitmodules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gitmodules b/.gitmodules
index 70d4d76c2..a195f8e7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -5,7 +5,7 @@
 [submodule "external/libpng"]
 	path = external/libpng
 	url = https://github.com/libsdl-org/libpng.git
-	branch = v1.6.46-SDL
+	branch = v1.6.47-SDL
 [submodule "external/libwebp"]
 	path = external/libwebp
 	url = https://github.com/libsdl-org/libwebp.git