Added .NET 9 support and removed .NET 6 support

Author: vivet

.tests/GoogleApi.Test/GoogleApi.Test.csproj

@@ -1,22 +1,22 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-	<TargetFrameworks>net8.0</TargetFrameworks>
+	<TargetFrameworks>net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <LangVersion>latest</LangVersion>
 	<UserSecretsId>acb265c9-a443-4053-87c7-632b01a0e70d</UserSecretsId>
 	<SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.6.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.6.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="9.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.4" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.6.4" />
   </ItemGroup>
 
   <ItemGroup>

.tests/GoogleApi.UnitTests/GoogleApi.UnitTests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-	<TargetFrameworks>net462;net48;net481;net6.0;net8.0</TargetFrameworks>
+	<TargetFrameworks>net462;net48;net481;net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <LangVersion>latest</LangVersion>
 	<SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
@@ -14,12 +14,9 @@
   </ItemGroup>
 
   <ItemGroup>
-	<PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
-	<PackageReference Include="AutoFixture" Version="4.18.1" />
-	<PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.18.1" />
-	<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-	<PackageReference Include="MSTest.TestAdapter" Version="3.6.1" />
-	<PackageReference Include="MSTest.TestFramework" Version="3.6.1" />
+	<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+	<PackageReference Include="MSTest.TestAdapter" Version="3.6.4" />
+	<PackageReference Include="MSTest.TestFramework" Version="3.6.4" />
   </ItemGroup>
 
   <ItemGroup>