SDL_image: ci: don't use sdl2's HEAD brew package anymore

SDL Commits
1 
From 50835f5cdfdd30f93897857a5bdbc7821bb3bc9b Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 13 Oct 2022 12:04:19 +0200
Subject: [PATCH] ci: don't use sdl2's HEAD brew package anymore

---
 .github/workflows/main.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 152c3fc6..b4975f17 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -61,7 +61,7 @@ jobs:
             webp \
             zlib \
             ${NULL+}
-          brew install sdl2 --HEAD
+          brew install sdl2
     - name: Setup Linux dependencies
       if: runner.os == 'Linux'
       run: |