Bump Serilog.Sinks.File from 5.0.0 to 6.0.0 in /Src/NuGetDefense.Lib

Bumps [Serilog.Sinks.File](https://github.com/serilog/serilog-sinks-file) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/serilog/serilog-sinks-file/releases)
- [Changelog](https://github.com/serilog/serilog-sinks-file/blob/dev/CHANGES.md)
- [Commits](serilog/serilog-sinks-file@v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: Serilog.Sinks.File
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Src/NuGetDefense.Lib/NuGetDefense.Lib.csproj

@@ -42,7 +42,7 @@
         <PackageReference Include="NuGetDefense.NVD" Version="2.1.6" />
         <PackageReference Include="NuGetDefense.OSSIndex" Version="2.1.4" />
         <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
-        <PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
+        <PackageReference Include="Serilog.Sinks.File" Version="6.0.0" />
         <PackageReference Include="System.Text.Json" Version="8.0.3" />
     </ItemGroup>