chore: change .NET Core SDK version

DavidRouyer · DavidRouyer · commit 68fbeafe93e3 · 2018-07-20T15:02:50.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 language: csharp
 mono: none
 dist: trusty
-dotnet: 2.1.302
+dotnet: 2.1.301
 script:
  - cd src
  - dotnet build
