upgrade System.Text.Json

Author: doghappy

src/SocketIOClient/SocketIOClient.csproj

@@ -27,7 +27,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Collections" Version="4.3.0" />
-    <PackageReference Include="System.Text.Json" Version="5.0.2" />
+    <PackageReference Include="System.Text.Json" Version="6.0.0" />
   </ItemGroup>
 
 </Project>