Update NUnit Packages to 3.4.1

Author: maxraab

src/GitVersionCore.Tests/packages.config

@@ -8,7 +8,7 @@
   <package id="LibGit2Sharp.NativeBinaries" version="1.0.137" targetFramework="net45" />
   <package id="ModuleInit.Fody" version="1.5.9.0" targetFramework="net45" developmentDependency="true" />
   <package id="NSubstitute" version="1.10.0.0" targetFramework="net45" />
-  <package id="NUnit" version="3.2.1" targetFramework="net45" />
+  <package id="NUnit" version="3.4.1" targetFramework="net45" />
   <package id="NUnit3TestAdapter" version="3.4.1" targetFramework="net45" />
   <package id="Shouldly" version="2.7.0" targetFramework="net45" />
   <package id="TestStack.ConventionTests" version="3.0.0" targetFramework="net45" />

src/GitVersionExe.Tests/packages.config

@@ -5,7 +5,7 @@
   <package id="LibGit2Sharp" version="0.23.0-pre20150419160303" targetFramework="net45" />
   <package id="LibGit2Sharp.NativeBinaries" version="1.0.137" targetFramework="net45" />
   <package id="NSubstitute" version="1.10.0.0" targetFramework="net45" />
-  <package id="NUnit" version="3.2.1" targetFramework="net45" />
+  <package id="NUnit" version="3.4.1" targetFramework="net45" />
   <package id="NUnit3TestAdapter" version="3.4.1" targetFramework="net45" />
   <package id="Shouldly" version="2.7.0" targetFramework="net45" />
 </packages>

src/GitVersionTask.Tests/packages.config

@@ -15,7 +15,7 @@
   <package id="ModuleInit.Fody" version="1.5.9.0" targetFramework="net45" developmentDependency="true" />
   <package id="Newtonsoft.Json" version="8.0.3" targetFramework="net45" />
   <package id="NSubstitute" version="1.10.0.0" targetFramework="net45" />
-  <package id="NUnit" version="3.2.1" targetFramework="net45" />
+  <package id="NUnit" version="3.4.1" targetFramework="net45" />
   <package id="NUnit3TestAdapter" version="3.4.1" targetFramework="net45" />
   <package id="ObjectApproval" version="1.3.0" targetFramework="net45" />
   <package id="Shouldly" version="2.7.0" targetFramework="net45" />