chore(deps): update upm project dependency com.unity.multiplayer.playmode to v1.4.0

Author: unity-renovate[bot]

Examples/PingTool/Packages/manifest.json

@@ -9,7 +9,7 @@
     "com.unity.feature.development": "1.0.2",
     "com.unity.ide.visualstudio": "2.0.22",
     "com.unity.multiplayer.center": "1.0.0",
-    "com.unity.multiplayer.playmode": "1.3.0",
+    "com.unity.multiplayer.playmode": "1.4.0",
     "com.unity.multiplayer.tools": "2.2.1",
     "com.unity.netcode.gameobjects": "https://github.com/Unity-Technologies/com.unity.netcode.gameobjects.git?path=com.unity.netcode.gameobjects#develop-2.0.0",
     "com.unity.services.multiplayer": "1.0.0",