Update game.yml

update deployment workflow to use Ubuntu 22.04 image since 18.04 is deprecated. See actions/runner-images#6002.

.github/workflows/game.yml

@@ -17,7 +17,7 @@ on:
         default: false
 jobs:
   deploy:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2