Bump System.Text.Encoding.CodePages from 4.7.0 to 4.7.1

Bumps [System.Text.Encoding.CodePages](https://github.com/dotnet/corefx) from 4.7.0 to 4.7.1.
- [Release notes](https://github.com/dotnet/corefx/releases)
- [Commits](https://github.com/dotnet/corefx/commits)

Signed-off-by: dependabot[bot] <support@github.com>

MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj

@@ -23,7 +23,7 @@
 
   <ItemGroup>
     <PackageReference Include="BDInfo" Version="0.7.6.1" />
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="4.7.0" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="4.7.1" />
     <PackageReference Include="UTF.Unknown" Version="2.3.0" />
   </ItemGroup>