[up] Microsoft.Extensions.Configuration to 9.0.6

[up] System.Configuration.ConfigurationManager to 9.0.6
[deps] target framework update to .NET 9

Author: i4004

src/Simplify.Mail/CHANGELOG.md

@@ -1,5 +1,20 @@
 # Changelog
 
+## [1.6.0] - 2025-06-15
+
+### Removed
+
+- .NET 6 support
+
+### Added
+
+- .NET 9 support
+
+### Dependencies
+
+- Microsoft.Extensions.Configuration bump to 9.0.6
+- System.Configuration.ConfigurationManager bump to 9.0.6
+
 ## [1.5.5] - 2022-09-08
 
 ### Added

src/Simplify.Mail/Simplify.Mail.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFrameworks>net6.0;netstandard2.1;netstandard2.0;net48</TargetFrameworks>
+		<TargetFrameworks>net9.0;netstandard2.1;netstandard2.0;net48</TargetFrameworks>
 		<LangVersion>latest</LangVersion>
 		<EmbedUntrackedSources>true</EmbedUntrackedSources>
 		<IncludeSymbols>true</IncludeSymbols>
 		<SymbolPackageFormat>snupkg</SymbolPackageFormat>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile>
 
-		<Version>1.5.5</Version>
+		<Version>1.6.0</Version>
 
 		<Authors>Alexander Krylkov</Authors>
 		<Product>Simplify</Product>
@@ -22,10 +22,10 @@
 		<PackageReleaseNotes>See https://github.com/SimplifyNet/Simplify/tree/master/src/Simplify.Mail/CHANGELOG.md for details</PackageReleaseNotes>
 	</PropertyGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.32" />
+		<PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.6" />
 	</ItemGroup>
-	<ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' Or '$(TargetFramework)' == 'netstandard2.1' Or '$(TargetFramework)' == 'netstandard2.0' ">
-		<PackageReference Include="System.Configuration.ConfigurationManager" Version="4.7.0" />
+	<ItemGroup Condition=" '$(TargetFramework)' == 'net9.0' Or '$(TargetFramework)' == 'netstandard2.1' Or '$(TargetFramework)' == 'netstandard2.0' ">
+		<PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.6" />
 	</ItemGroup>
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net48' ">
 		<Reference Include="System" />