Update Roslyn to 4.4.0-4.final

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -57,7 +57,7 @@
     <!-- used for xml test result files -->
     <PackageReference Include="JunitXml.TestLogger" Version="$(JUnitXmlTestLoggerVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(MicrosoftNETTestSdkVersion)" />
-    <PackageReference Include="System.Memory" Version="4.5.4" />
+    <PackageReference Include="System.Memory" Version="4.5.5" />
     <PackageReference Include="Mono.Cecil" Version="$(MonoCecilVersion)" />
     <PackageReference Include="Microsoft.NETCore.ILAsm" Version="$(ILAsmVersion)" />
     <PackageReference Include="Microsoft.NETCore.ILDAsm" Version="$(ILDAsmVersion)" />

packages.props

@@ -14,7 +14,7 @@
 		<!-- Microsoft.NETCore.ILDAsm -->
 		<ILDAsmVersion>6.0.0</ILDAsmVersion>
 		<!-- Microsoft.CodeAnalysis.* -->
-		<RoslynVersion>4.3.0-2.final</RoslynVersion>
+		<RoslynVersion>4.4.0-4.final</RoslynVersion>
 		<MonoCecilVersion>0.11.4</MonoCecilVersion>
 		<AvalonEditVersion>6.1.3.50</AvalonEditVersion>
 		<WpfStylesToolboxVersion>2.7.6</WpfStylesToolboxVersion>