Bump NLog from 6.1.1 to 6.1.2 (#90)

Author: dependabot[bot]

WatermarkStamper/WatermarkStamper.csproj

@@ -127,7 +127,7 @@
       <Version>13.0.4</Version>
     </PackageReference>
     <PackageReference Include="NLog">
-      <Version>6.1.1</Version>
+      <Version>6.1.2</Version>
     </PackageReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />