Bump MessagePack from 2.5.172 to 2.5.187

Bumps [MessagePack](https://github.com/MessagePack-CSharp/MessagePack-CSharp) from 2.5.172 to 2.5.187.
- [Release notes](https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases)
- [Changelog](https://github.com/MessagePack-CSharp/MessagePack-CSharp/blob/master/prepare_release.ps1)
- [Commits](MessagePack-CSharp/MessagePack-CSharp@v2.5.172...v2.5.187)

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

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

Directory.Packages.props

@@ -18,7 +18,7 @@
         <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
         <PackageVersion Include="coverlet.collector" Version="6.0.2" />
         <PackageVersion Include="ConsoleAppFramework" Version="4.2.4" />
-        <PackageVersion Include="MessagePack" Version="2.5.172" />
+        <PackageVersion Include="MessagePack" Version="2.5.187" />
         <PackageVersion Include="MessagePack.AspNetCoreMvcFormatter" Version="2.5.172" />
     </ItemGroup>
 </Project>