Merge pull request #493 from justeat/update-dotnet-sdk-6.0.403

Update .NET SDK to 6.0.403

Author: martincostello

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "6.0.402",
+    "version": "6.0.403",
     "allowPrerelease": false,
     "rollForward": "latestMajor"
   }