test: update deps for net7 support (#812)

Author: piksel

test/ICSharpCode.SharpZipLib.Tests/ICSharpCode.SharpZipLib.Tests.csproj

@@ -12,11 +12,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageReference Include="nunit" Version="3.13.3" />
-    <PackageReference Include="nunit.console" Version="3.15.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="4.4.0" />
+    <PackageReference Include="nunit.console" Version="3.16.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.3.1" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="7.0.0" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
   </ItemGroup>