Update .travis.yml

Zaczero · Zaczero · commit 529b4367a216 · 2020-11-01T20:36:31.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 language: csharp
 solution: 2Captcha.sln
 mono: none
-dotnet: 2.1.809
+dotnet: 3.1.403
 script:
  - dotnet build -c Debug
  - dotnet build -c Release
