Update unit test

Author: Invvard

src/InvvardDev.EZLayoutDisplay.Tests/ViewModel/AboutViewModelTest.cs

@@ -21,7 +21,7 @@ public void AboutViewModelConstructor()
             // Assert
             Assert.Equal("About EZ Layout Display", aboutViewModel.WindowTitle);
             Assert.Equal("EZ Layout Display", aboutViewModel.AppTitleLabel);
-            Assert.Equal("v1.2.0", aboutViewModel.AppVersionLabel);
+            Assert.Equal("v1.2.1", aboutViewModel.AppVersionLabel);
             Assert.Equal("Created by", aboutViewModel.CreatedTitleLabel);
             Assert.Equal("Based on", aboutViewModel.BasedOnTitleLabel);
             Assert.Equal("Project home", aboutViewModel.ProjectHomeTitleLabel);