CI: Install SDL2 and Pixman

Author: shengwen-tw

.github/workflows/main.yml

@@ -9,7 +9,10 @@ jobs:
     - uses: actions/checkout@v4
     - name: install-dependencies
       run: | 
+            sudo apt update
             sudo apt-get install build-essential device-tree-compiler
+            sudo apt-get install libsdl2-dev libsdl2-2.0-0 libsdl2-image-dev libsdl2-image-2.0-0
+            sudo apt install libpixman-1-dev
             sudo apt-get install expect
     - name: default build
       run: make