(maint) added TFM net6.0

Author: nils-a

.gitignore

@@ -52,3 +52,4 @@ docs/input/tasks/*
 # Wyam related
 config.wyam.*
 /src/packages/
+.idea/

src/.idea/.idea.Spectre.Console.Registrars.SimpleInjector/.idea/.gitignore

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
+        <TargetFrameworks>netcoreapp3.1;net5.0;net6.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>

src/.idea/.idea.Spectre.Console.Registrars.SimpleInjector/.idea/.name

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net5.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net5.0;net6.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>