SDL_ttf: Set the correct required version of SDL

SDL Commits
1 
From a614d5be69e49962749a921291b189e2ec8d80d0 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 26 Oct 2024 09:21:56 -0700
Subject: [PATCH] Set the correct required version of SDL

Fixes https://github.com/libsdl-org/SDL_ttf/issues/426
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 131ec3fb..59c5d255 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
 set(MAJOR_VERSION 3)
 set(MINOR_VERSION 0)
 set(MICRO_VERSION 0)
-set(SDL_REQUIRED_VERSION 3.0.0)
+set(SDL_REQUIRED_VERSION 3.1.5)
 
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
     message(FATAL_ERROR "Prevented in-tree built. Please create a build directory outside of the SDL_ttf source code and call cmake from there")