SDL_image: Updated CHANGES.txt with patch notes for the 2.8.0 release

From c3e518e2c91e78fae3349f96456d5e5361d63dae Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 28 Nov 2023 13:34:17 -0800
Subject: [PATCH] Updated CHANGES.txt with patch notes for the 2.8.0 release

---
 CHANGES.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGES.txt b/CHANGES.txt
index 41dbd5ab..9440f47a 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,7 @@
+2.8.0:
+ * Added support for loading WEBP animations
+ * PNG images with a palette are loaded as SDL surfaces with a palette
+
 2.6.3:
  * Fixed loading of 4-bit .ico files