Remove the System.Text.Encoding.CodePages package as it is provided by .NET 8 and newer runtimes

Fixes issue #6

Author: jozefizso

src/Kavod.Vba.Compression/Kavod.Vba.Compression.csproj

@@ -5,10 +5,6 @@
     <Description>VbaCompression library implements [MS-OVBA] Compression and Decompression algorithms used in the Office VBA File Format structures. Office VBA project contains embedded macros and custom forms for use in Microsoft Office documents.</Description>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="8.0.0" />
-  </ItemGroup>
-
   <ItemGroup>
     <None Include="README.md" Pack="true" PackagePath="\" />
     <None Include="Icon.png" Pack="true" PackagePath="\" />