Upgrade to .NET 8 runtime

Author: jozefizso

src/Utils/AppData.cs

@@ -2,7 +2,7 @@
 using System.IO;
 using System.Linq;
 using Microsoft.AspNetCore.Hosting;
-using Newtonsoft.Json;
+using System.Text.Json;
 using NuGet;
 
 namespace GitAttributesWeb.Utils
@@ -44,7 +44,7 @@ public string FilesJson
         {
             get
             {
-                return JsonConvert.SerializeObject(this.Files);
+                return JsonSerializer.Serialize(this.Files);
             }
         }
     }

src/Utils/FileTemplateInfo.cs

@@ -1,17 +1,14 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace GitAttributesWeb.Utils
 {
     public class FileTemplateInfo
     {
-        [JsonProperty("id")]
+        [JsonPropertyName("id")]
         public string Id { get; set; }
 
-        [JsonProperty("name")]
+        [JsonPropertyName("name")]
         public string Name { get; set; }
 
         [JsonIgnore]

src/gitattributes.csproj

@@ -1,15 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <VersionPrefix>1.3.0</VersionPrefix>
-    <TargetFramework>net5.0</TargetFramework>
+    <VersionPrefix>1.4.0</VersionPrefix>
+    <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>gitattributes</AssemblyName>
     <PackageId>gitattributes</PackageId>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="NWebsec.AspNetCore.Middleware" Version="3.0.0" />
-    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.16.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />
   </ItemGroup>
 
   <Target Name="PrepublishScript" BeforeTargets="PrepareForPublish">