Bump TopShelf from 4.2.0 to 4.2.1

Bumps [TopShelf](https://github.com/Topshelf/Topshelf) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/Topshelf/Topshelf/releases)
- [Changelog](https://github.com/Topshelf/Topshelf/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/Topshelf/Topshelf/commits)

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

OhmGraphite/OhmGraphite.csproj

@@ -33,7 +33,7 @@
     <PackageReference Include="Npgsql" Version="4.0.7" />
     <PackageReference Include="prometheus-net" Version="3.1.4" />
     <PackageReference Include="Resourcer.Fody" Version="1.7.3" />
-    <PackageReference Include="TopShelf" Version="4.2.0" />
+    <PackageReference Include="TopShelf" Version="4.2.1" />
     <PackageReference Include="Topshelf.NLog" Version="4.2.0" />
     <PackageReference Include="InfluxDB.LineProtocol" Version="1.1.0" />
     <PackageReference Include="MSBuildTasks" Version="1.5.0.235" />