build(deps): Bump Splat.Serilog from 14.7.1 to 14.8.12 (#784)

Bumps [Splat.Serilog](https://github.com/reactiveui/splat) from 14.7.1 to 14.8.12.
- [Release notes](https://github.com/reactiveui/splat/releases)
- [Commits](reactiveui/splat@14.7.1...14.8.12)

---
updated-dependencies:
- dependency-name: Splat.Serilog
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Chris Pulman <[email protected]>

Author: dependabot[bot]

avalonia/suspension/ReactiveUI.Samples.Suspension/ReactiveUI.Samples.Suspension.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Avalonia.ReactiveUI" Version="11.0.4" />
     <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.5" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="Splat.Serilog" Version="14.7.1" />
+    <PackageReference Include="Splat.Serilog" Version="14.8.12" />
   </ItemGroup>
 
   <ItemGroup>