Bump NLog.Config from 4.7.2 to 4.7.3

Bumps [NLog.Config](https://github.com/NLog/NLog) from 4.7.2 to 4.7.3.
- [Release notes](https://github.com/NLog/NLog/releases)
- [Changelog](https://github.com/NLog/NLog/blob/v4.7.3/CHANGELOG.md)
- [Commits](https://github.com/NLog/NLog/compare/v4.7.2...v4.7.3)

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

OhmGraphite/OhmGraphite.csproj

@@ -29,7 +29,7 @@
 
   <ItemGroup>
     <PackageReference Include="Costura.Fody" Version="3.3.2" />
-    <PackageReference Include="NLog.Config" Version="4.7.2" />
+    <PackageReference Include="NLog.Config" Version="4.7.3" />
     <PackageReference Include="Npgsql" Version="4.1.4" />
     <PackageReference Include="prometheus-net" Version="3.6.0" />
     <PackageReference Include="Resourcer.Fody" Version="1.7.3" />