Add support for .net 6.0. Fix for #122 (#123)

Co-authored-by: Ivan Duman <webhelpadmin@gmail.com>

Author: webhelpadmin

src/FluentAssertions.Analyzers.Tests/FluentAssertions.Analyzers.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>

src/FluentAssertions.Analyzers/FluentAssertions.Analyzers.csproj

@@ -1,10 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
-    <TargetFrameworks>netstandard2.0;netstandard2.1;net48;net6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net48;net6.0</TargetFrameworks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(OS)' != 'Windows_NT' ">
-    <TargetFrameworks>netstandard2.0;netstandard2.1;net6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup>