upgrade other packages 5.0.0 -> 6.0.0

Author: shuebner

XmlSchemaClassGenerator.SourceGenerator/XmlSchemaClassGenerator.SourceGenerator.csproj

@@ -35,8 +35,8 @@
 
   <ItemGroup>
     <PackageReference Include="System.CodeDom" Version="6.0.0" PrivateAssets="all" GeneratePathProperty="true" />
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0" PrivateAssets="all" GeneratePathProperty="true" />
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="5.0.0" PrivateAssets="all" GeneratePathProperty="true" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="6.0.0" PrivateAssets="all" GeneratePathProperty="true" />
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.4.0" GeneratePathProperty="true"/>
   </ItemGroup>