Add dotnet outdated

Author: tiksn

.config/dotnet-tools.json

@@ -22,6 +22,13 @@
         "dotnet-gitversion"
       ],
       "rollForward": false
+    },
+    "dotnet-outdated-tool": {
+      "version": "4.8.1",
+      "commands": [
+        "dotnet-outdated"
+      ],
+      "rollForward": false
     }
   }
 }