SDL_image: bump zlib from 1.2.12 (March 2022) -> 1.3 (August 2023)

From 5b5cd9315b9c6f29eb387be6dbb1d52af5d633d3 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sat, 9 Sep 2023 21:20:26 +0200
Subject: [PATCH] bump zlib from 1.2.12 (March 2022) -> 1.3 (August 2023)

---
 .gitmodules   | 2 +-
 external/zlib | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.gitmodules b/.gitmodules
index 122d5025..9f0fc374 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -21,7 +21,7 @@
 [submodule "external/zlib"]
 	path = external/zlib
 	url = https://github.com/libsdl-org/zlib.git
-	branch = v1.2.12-SDL
+	branch = v1.3-SDL
 [submodule "external/libjxl"]
 	path = external/libjxl
 	url = https://github.com/libsdl-org/libjxl.git
diff --git a/external/zlib b/external/zlib
index f040d0cf..00c4625c 160000
--- a/external/zlib
+++ b/external/zlib
@@ -1 +1 @@
-Subproject commit f040d0cf7a553078a195d6c3af0ec78b14d4242e
+Subproject commit 00c4625cb838018a0963ebcc7e2e9d864002a504