Update NuGet packages and copyright year range

Upgraded BenchmarkDotNet, Microsoft.NET.Test.Sdk, NUnit3TestAdapter, and NUnit.Analyzers to latest versions in project files. Updated Microsoft.SourceLink.GitHub and extended copyright to 2026.

Author: ds5678

AssetRipper.TextureDecoder.Benchmarks/AssetRipper.TextureDecoder.Benchmarks.csproj

@@ -5,7 +5,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="BenchmarkDotNet" Version="0.15.4" />
+		<PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
 	</ItemGroup>
 
 	<ItemGroup>

AssetRipper.TextureDecoder.Tests/AssetRipper.TextureDecoder.Tests.csproj

@@ -5,10 +5,10 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 		<PackageReference Include="NUnit" Version="4.4.0" />
-		<PackageReference Include="NUnit3TestAdapter" Version="5.1.0" />
-		<PackageReference Include="NUnit.Analyzers" Version="4.10.0">
+		<PackageReference Include="NUnit3TestAdapter" Version="6.1.0" />
+		<PackageReference Include="NUnit.Analyzers" Version="4.11.2">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>

AssetRipper.TextureDecoder/AssetRipper.TextureDecoder.csproj

@@ -10,7 +10,7 @@
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<RepositoryType>git</RepositoryType>
 		<PackageProjectUrl>https://github.com/AssetRipper/TextureDecoder</PackageProjectUrl>
-		<Copyright>Copyright (c) 2022 - 2024 ds5678</Copyright>
+		<Copyright>Copyright (c) 2022 - 2026 ds5678</Copyright>
 		<Description>Managed library for decoding textures in multiple formats.</Description>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 
@@ -20,7 +20,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0">
+		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.102">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>