chore(deps): update splat to v18 (#46)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -4,7 +4,7 @@
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
     <AvaloniaVersion>11.3.10</AvaloniaVersion>
     <AvaloniaLatestVersion>11.3.*</AvaloniaLatestVersion>
-    <SplatVersion>17.2.1</SplatVersion>
+    <SplatVersion>18.1.1</SplatVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="coverlet.collector" Version="6.0.4">