Update workflow to use apt update before installing gcc-multilib

Author: AlixANNERAUD

.github/workflows/Check.yml

@@ -48,7 +48,7 @@ jobs:
           ldproxy: true
 
       - name: Setup | Install necessary dependencies
-        run: sudo apt-get install -y gcc-multilib
+        run: sudo apt update && apt install -y gcc-multilib
 
       - name: Setup | Build and source build tool
         run: source Export.sh