Bump MessagePack.AspNetCoreMvcFormatter from 2.5.140 to 2.5.168

Bumps [MessagePack.AspNetCoreMvcFormatter](https://github.com/MessagePack-CSharp/MessagePack-CSharp) from 2.5.140 to 2.5.168.
- [Release notes](https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases)
- [Changelog](https://github.com/MessagePack-CSharp/MessagePack-CSharp/blob/master/prepare_release.ps1)
- [Commits](https://github.com/MessagePack-CSharp/MessagePack-CSharp/commits)

---
updated-dependencies:
- dependency-name: MessagePack.AspNetCoreMvcFormatter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Directory.Packages.props

@@ -19,6 +19,6 @@
         <PackageVersion Include="coverlet.collector" Version="6.0.2" />
         <PackageVersion Include="ConsoleAppFramework" Version="4.2.4" />
         <PackageVersion Include="MessagePack" Version="2.5.168" />
-        <PackageVersion Include="MessagePack.AspNetCoreMvcFormatter" Version="2.5.140" />
+        <PackageVersion Include="MessagePack.AspNetCoreMvcFormatter" Version="2.5.168" />
     </ItemGroup>
 </Project>