Bump version

Two 18.0.4 builds got triggered, causing insertions to fail because they couldn't both push packages and I'm not sure which ones got pushed from which build.

Author: rainersigwald

eng/Versions.props

@@ -3,7 +3,7 @@
 <Project>
   <Import Project="Version.Details.props" Condition="Exists('Version.Details.props')" />
   <PropertyGroup>
-    <VersionPrefix>18.0.4</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
+    <VersionPrefix>18.0.5</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <PackageValidationBaselineVersion>17.14.8</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>servicing</PreReleaseVersionLabel>