Bump Serilog and Serilog.Sinks.XUnit

Bumps Serilog from 4.0.0 to 4.1.0
Bumps Serilog.Sinks.XUnit from 3.0.5 to 3.0.19

---
updated-dependencies:
- dependency-name: Serilog
  dependency-version: 4.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Serilog.Sinks.XUnit
  dependency-version: 3.0.19
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tests/Tokenizer.Tests/Tokenizer.Tests.csproj

@@ -16,10 +16,10 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.9" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.9" />
     <PackageReference Include="NSubstitute" Version="5.3.0" />
-    <PackageReference Include="Serilog" Version="4.0.0" />
+    <PackageReference Include="Serilog" Version="4.1.0" />
     <PackageReference Include="Serilog.Extensions.Logging" Version="8.0.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.1.1" />
-    <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.5" />
+    <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.19" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
     <PackageReference Include="coverlet.collector" Version="10.0.1">