SDL_image: upgrade vendored libjxl to v0.7.3 (41f33)

From 41f3377ab5dd514d785752172451735a27d9e06c Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Tue, 17 Feb 2026 08:30:50 +0300
Subject: [PATCH] upgrade vendored libjxl to v0.7.3

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

diff --git a/.gitmodules b/.gitmodules
index ae2f0fae..69c36857 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -21,7 +21,7 @@
 [submodule "external/libjxl"]
 	path = external/libjxl
 	url = https://github.com/libsdl-org/libjxl.git
-	branch = v0.7.2-SDL
+	branch = v0.7.3-SDL
 [submodule "external/libavif"]
 	path = external/libavif
 	url = https://github.com/libsdl-org/libavif.git
diff --git a/external/libjxl b/external/libjxl
index e8cb2aea..fddbaf45 160000
--- a/external/libjxl
+++ b/external/libjxl
@@ -1 +1 @@
-Subproject commit e8cb2aea8a1a611fb8d44e4acbf33f92e770fd94
+Subproject commit fddbaf45dc5411ff505757b826429cfe014d06fa