Bump NLog.Config from 4.6.3 to 4.6.4

Bumps [NLog.Config](https://github.com/NLog/NLog) from 4.6.3 to 4.6.4.
- [Release notes](https://github.com/NLog/NLog/releases)
- [Changelog](https://github.com/NLog/NLog/blob/dev/CHANGELOG.md)
- [Commits](https://github.com/NLog/NLog/compare/v4.6.3...v4.6.4)

OhmGraphite/OhmGraphite.csproj

@@ -29,7 +29,7 @@
 
   <ItemGroup>
     <PackageReference Include="Costura.Fody" Version="3.3.2" />
-    <PackageReference Include="NLog.Config" Version="4.6.3" />
+    <PackageReference Include="NLog.Config" Version="4.6.4" />
     <PackageReference Include="Npgsql" Version="4.0.7" />
     <PackageReference Include="prometheus-net" Version="3.1.2" />
     <PackageReference Include="Resourcer.Fody" Version="1.7.3" />