Fix CI deprecation warnings

Author: ChrisThrasher

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       run: sudo apt-get update && sudo apt-get install libxrandr-dev libxcursor-dev libudev-dev libopenal-dev libflac-dev libvorbis-dev libgl1-mesa-dev libegl1-mesa-dev
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Configure
       shell: bash