fix(ci):changed npm start to npx next start

Author: ClemTheAlien

.github/workflows/ci.yml

@@ -159,7 +159,7 @@ jobs:
               path: .next
 
           - name: Start application server
-            run: npm start & # 
+            run: npx next start 
 
           - name: Wait for server to be ready 
             run: sleep 10