feat: Add i386 architecture and install libstdc++6

This commit adds the installation of libstdc++6:i386 package to support 32-bit applications. It also includes adding the i386 architecture to dpkg.

.github/workflows/update-check.yml

@@ -23,7 +23,7 @@ jobs:
         run: wget https://raw.githubusercontent.com/GameServerManagers/LinuxGSM/${GITHUB_REF#refs/heads/}/linuxgsm.sh; chmod +x linuxgsm.sh
 
       - name: Install dependencies
-        run: sudo dpkg --add-architecture i386
+        run: sudo dpkg --add-architecture i386; sudo apt install libstdc++6:i386
 
       - name: Grab server
         run: LGSM_GITHUBBRANCH="${GITHUB_REF#refs/heads/}" ./linuxgsm.sh ${{ matrix.shortname }}server