upgrade to net8 LTS

Author: VisualBean

Common.Build.props

@@ -2,7 +2,7 @@
   <!-- Common Properties used by all assemblies -->
   <PropertyGroup>
     <LangVersion>10</LangVersion>
-    <TargetFrameworks>netstandard2.0;net6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8</TargetFrameworks>
     <ImplicitUsings>disable</ImplicitUsings>
     <Company>The LEGO Group</Company>
     <PackageProjectUrl>https://github.com/LEGO/AsyncAPI.NET</PackageProjectUrl>

src/LEGO.AsyncAPI.Bindings/LEGO.AsyncAPI.Bindings.csproj

@@ -19,6 +19,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="9.0.1" />
   </ItemGroup>
 
   <ItemGroup>

src/LEGO.AsyncAPI.Readers/LEGO.AsyncAPI.Readers.csproj

@@ -21,6 +21,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Text.Json" Version="9.0.1" />
     <PackageReference Include="YamlDotNet" Version="13.0.1" />
   </ItemGroup>
 

src/LEGO.AsyncAPI/LEGO.AsyncAPI.csproj

@@ -19,7 +19,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="System.Text.Json" Version="8.0.4" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
+    <PackageReference Include="System.Text.Json" Version="9.0.1" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
 
 	  <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
 		  <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>