Update to .Net Core 2.1 SDK

Krzysztof-Cieslak · Krzysztof-Cieslak · commit 3314cd6057bf · 2018-10-04T13:01:28.000+02:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,6 +1,6 @@
 image:
   - Visual Studio 2017
-  - Ubuntu
+  - Ubuntu1804
 init:
   - git config --global core.autocrlf input
 install:
diff --git a/global.json b/global.json
@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "2.1.300"
+    "version": "2.1.402"
   }
 }
