SDL_image: Updated the changes file

SDL Commits
1 
From b33dcd0a32cba7b6f99b6b619ca68df615743b60 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 16 Oct 2023 09:14:54 -0700
Subject: [PATCH] Updated the changes file

---
 CHANGES.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGES.txt b/CHANGES.txt
index 33dddc34..41dbd5ab 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,9 @@
+2.6.3:
+ * Fixed loading of 4-bit .ico files
+
+2.6.2:
+ * Updated autotools to use ax_compute_relative_paths, fixing homebrew on macOS
+
 2.6.1:
  * Fixed loading grayscale PNGs when using stb_image