travis-ci: update dotnet sdk version
also, we need to to switch to xenial, dotnet sdk is not available for trusty
sudo: required
+dist: xenial
language: c
@@ -38,7 +39,7 @@ matrix:
os: linux
language: csharp
mono: none
- dotnet: 2.1.300
+ dotnet: 2.2.203
before_install:
- true
script:
