upgraded Roslyn to 3.6.0 (#499)

Co-authored-by: bettinaheim <34236215+bettinaheim@users.noreply.github.com>

Author: filipw

src/QsCompiler/CommandLineTool/CommandLineTool.csproj

@@ -26,11 +26,11 @@
 
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.6.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="3.3.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.3.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.3.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Features" Version="3.3.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="3.3.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="3.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Features" Version="3.6.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="3.6.0" />
   </ItemGroup>
 
   <ItemGroup>

src/QsCompiler/TextProcessor/TextProcessor.fsproj

@@ -30,7 +30,7 @@
 
   <ItemGroup>
     <PackageReference Include="FParsec" Version="1.0.3" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.3.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.6.0" />
     <PackageReference Update="FSharp.Core" Version="4.7.0" />
     <PackageReference Update="System.ValueTuple" Version="4.4.0" />
   </ItemGroup>