Switch to NGO packages instead of local files.

Packages/manifest.json

     "com.unity.ide.rider": "3.0.7",
     "com.unity.ide.visualstudio": "2.0.11",
     "com.unity.ide.vscode": "1.2.3",
+    "com.unity.netcode.adapter.utp": "1.0.0-pre.2",
+    "com.unity.netcode.gameobjects": "1.0.0-pre.2",
     "com.unity.nuget.newtonsoft-json": "2.0.0",
     "com.unity.services.authentication": "1.0.0-pre.6",
     "com.unity.services.core": "1.1.0-pre.10",

Packages/packages-lock.json

       "url": "https://packages.unity.com"
     },
     "com.unity.netcode.adapter.utp": {
-      "version": "file:com.unity.netcode.adapter.utp",
+      "version": "1.0.0-pre.2",
-      "source": "embedded",
+      "source": "registry",
-        "com.unity.netcode.gameobjects": "1.0.0-pre.1",
+        "com.unity.netcode.gameobjects": "1.0.0-pre.2",
-      }
+      },
+      "url": "https://packages.unity.com"
-      "version": "file:com.unity.netcode.gameobjects",
+      "version": "1.0.0-pre.2",
-      "source": "embedded",
+      "source": "registry",
-      }
+      },
+      "url": "https://packages.unity.com"
     },
     "com.unity.nuget.mono-cecil": {
       "version": "1.10.1",